Once upon a time, there was a lactating queen, named Elizabeth. She agreed to babysit the prince (Henry) of a queen (we'll call her Helga) that lived 90 minutes away whilst she attended school. It would be once weekly for 9 hours for 3 moons (maybe? a semester!).
Queen Elizabeth reminded queen Helga to feed prince Henry a bottle 1-2 times/week so he will take one when he is babysat. Helga believed she could do this for one month, then take a 2 month break. Queen Elizabeth knew a baby's brain is like a grass field. If a path is not traveled, grass groweth over it. If it is traveled regularly, it becomes more solid.
Prince Henry was dropped off for the first time, he was happy and cute for a couple hours. He took a little nap and chilled with toys on the floor. Then he became hungry. Queen Elizabeth warmed duchess Helga's milk (yes, she's been demoted now). Prince Henry refused the bottle. Queen Elizabeth is a lactating heroine with much experience under her belt with more children than her own. She tried a variety of techniques, changed the temperature, changed nipples... took care of Henry's diaper, let him wait... 3 hours of almost constant screaming and protest, she texted duchess Helga, "When is the last time Henry had a bottle?"
The response didn't come soon enough, to save the poor boy more sadness, she did what she would want a woman to do in her position. She acted as a wetnurse and fed him. She was upset because that milk was made for her daughter, this milk was being taken from her daughter and it was a bond she did not intend to share with anyone else. This is when Queen Elizabeth was informed by Helga that Henry was not given one bottle for two months straight, despite Queen Elizabeth's advice.
Henry screamed and cried every week until Elizabeth gave in and nursed him for about 4 weeks. Queen Elizabeth was persistent in trying to get Henry to take a bottle. He gradually showed progress and began taking full feedings from her. (His parents did not try very hard with him at home.)
Henry and the wicked witch - I mean, his mother - Helga, lived struggling ever after. Queen Elizabeth was sad.
The end.IF YOU WANT TO EVER PLAN ON LEAVING YOUR BREASTFED BABY WITH A CARE PROVIDER AT ANY TIME BEFORE HE OR SHE STARTS EATING BABY FOOD, YOU MUST OFFER THE BOTTLE BEFORE THAT TIME COMES. IF YOUR BABY DOES NOT TAKE IT, KEEP TRYING.
^Read that 50 times if you know your baby is going to need babysat on a regular basis now or in the future while still being breastfed... unless you want to finish your shift/classes/whatever and find out your precious sweet, babe was screaming and crying half the time you were gone.
INTRODUCING THE BOTTLE (Ideal)
This method is pretty much cut-and-dry for success. I do not explore other options, because this is the best. If you want to experiment and try differently, go for it.
For the first 2-3 weeks, exclusively breastfeed. (If you had solid latching and stellar nursing sessions from the start, waiting for the bottle doesn't matter, but don't start with full feedings... keep reading). This will create a solid foundation for nursing. Do NOT let it go longer than 4 weeks before you introduce a bottle (IDEAL).
At week 3 or 4, you will introduce some pumped milk for only the first portion of the feeding. try to have an idea of your baby's feeding schedule and do this when you know baby should be hungry.
1 Let a friend, daddy or other family member feed the baby 1-2 ounces (no more than 2) with a bottle that has a slow-flow nipple. (Level 1 or 0 depending on the brand.)
2 Burp the baby, then YOU finish the feeding on the breast.
3 Pump afterwards (try to get the # of ounces baby had on the bottle) to save it for next time.
4 Repeat steps 1-3 the next day, then the next. You can allow baby to take a full feeding from the bottle after 4 or 5 times of just the partial feeding.
IMPORTANT TO NOTE
Some babies don't catch on right away, they may dribble with the bottle or struggle latching back on the breast. It is normal, don't panic. Repetition is key, you are making a new pathway of a new feeding method.
Mommy should never be the one feeding such a young baby with the bottle. They operate on familiarity, they suck a bottle differently than a breast. They will be confused trying to associate a new nipple with mommy's scent.
INTRODUCING THE BOTTLE TO AN OLDER BABY
Approach this when you are calm and have all the patience in the world. The older a baby is, the harder it is. Many people just throw their hands in the air, accept their baby will never take a bottle and then either cancel plans for mom to do other things or accept the fact their baby will scream and cry until mom comes back. - That doesn't have to happen. Yeah, baby acts like you are trying to pour boiling water down his throat... it takes patience.
Start with just 1-2 ounces also otherwise you will be wasting milk. You can add more later if baby actually takes it.
Offer the bottle at the beginning of EVERY FEEDING. Have someone other than mommy offer it, and it would be best if she wasn't anywhere nearby.
Keep trying every feeding you can. Things to consider changing or observing when you are in this process:
Temperature of milk, not too hot, not too cold.
FRESH milk... The fresher, the better. If you pump milk and know you will not need it that day, freeze it. If you wait 2 days, then freeze it, you have two degrees of aging. By the time it's warmed, you've reached 3 degrees of aging.
Nipple - if lowest flow isn't working (and you have tried everything else for at least 3 days), switch to higher flow.
Remember milk can sit out for a total of 5 hours. So if it sat out 30 minutes while pumping, 30 minutes while prepping, you have lost an hour. Warming advances the process. Baby may or may not take it with 2 hours of trying. Dump it. Start with new milk.
5 hours room temp, 3 days fridge (this is a mommy's number, not a scientist or doctor... why? smell it! After 2 days, baby is smart, it's not as good). 5 months in a GOOD freezer (not the door). Even longer in a deep freezer. That's it, not a combination of those, pick one. If it sat out for 3 hours, you cannot ALSO keep it in the fridge 3+ days. If it was in the fridge 3 days, you cannot freeze it for 5 months on top of that.
Shaken baby syndrome is real. Take a tired parent, add an inconsolable baby and it doesn't matter HOW nice, law-abiding and loving a parent is. You are tempted to beat that child quiet. No good parent wants to say this. How do babies end up in freezers, microwaves, limbs chopped off, shaken-baby or bruised??? A screaming baby and a care provider without patience. I don't know about you, but if my baby has to scream and cry while we try to get her bottle trained, I want it to be with me. I know my love will prevent me from harming her in frustration and I know my limits. I can walk away.
Do not make your child's care provider go through the HELL I went through (yes it was me if you didn't get that) with your baby. It is bad for the baby and the caregiver. I did not love this boy like my own. I was very angry with my situation. Not all care providers address this screaming difficult baby in a safe way. GET YOUR BABY BOTTLE TRAINED.