"A breastfeeding woman may, for reasons of convenience or medical necessity, supplement breastfeeding with bottles. Depending on the situation, this may involve supplementing with breast milk using a breast pump or formula. Mixed feeding can also serve as a preliminary step to weaning.
In practical terms, how do you introduce bottle feeding as part of mixed feeding?
"In cases of problematic breastfeeding, when the baby isn't gaining enough weight, introducing a bottle will help increase milk intake. Often, it's a sucking problem: some premature or low-birth-weight babies tire quickly at the breast and don't drink enough. Breastfeeding requires much more effort than bottle-feeding, which then supplements (and doesn't replace) breastfeeding."
This can be a temporary solution, because if the baby has gained weight well, the woman can eventually return to exclusive breastfeeding if she wishes. This will be more difficult if the bottles introduced contained powdered infant formula . In that case, it is advisable to supplement a breastfeeding session with a bottle of expressed breast milk, using a breast pump, to stimulate the breast and thus increase milk production. It is important to be mindful of this if you want to maintain lactation.
Regarding mixed feeding for convenience with bottles (of infant formula or formula), it's often implemented because the mother needs to sleep. In this case, a maximum of one or two bottles per day is recommended to avoid disrupting lactation too much. However, it's important not to start too early if you want to maintain breastfeeding (sometimes the baby can become reluctant to breastfeed and prefer the bottle, and it takes time for lactation to become well established). My advice: after at least one month of exclusive breastfeeding, at the last feed before bedtime around 10 or 11 pm, it's possible to offer both the breast and the bottle. This increases evening intake, keeps the baby full longer, and thus delays the middle-of-the-night feed. The mother breastfeeds her baby on demand, then gives them a break, and within the next hour, offers a bottle.
However, if the mother plans to breastfeed for six months, mixed feeding is not recommended, given the potential risk to her milk supply. If she is very tired, the father can also help at night by rocking and changing the baby to relieve her fatigue. It's a team effort. There are many other things to do besides giving a bottle to participate!