For some new mothers, breast feeding is a challenge and in some cases, it can seem to be almost impossible. Stress, illness and previous surgeries are just a few of the reasons that a new mother may under-produce breast milk. If you have recently given birth and discover that, in spite of your best efforts, you are not producing enough breast milk, you should talk to your pediatrician about supplementing your breastfeeding with baby formula. It can be a bitter pill but if, like me, you find that your baby is still hungry at the end of a feeding, deciding to supplement is actually a complete no-brainer.
If your baby is not showing any obvious signs of allergies or sensitivities (gas, diarrhea and the like) you can start with any cow's milk based brand that appeals to you. Remember that all formulas sold in the US are governed by the FDA so you can be sure the nutrition guidelines are similar from brand to brand. Similac, Enfamil, Nestle or (and I wish this had been available when I was supplementing my baby) organic brands like Horizon are all fine places to start. We used powdered formula and bottles with disposable inserts for mixing but you can also buy formula in super convenient ready to use bottles and concentrated liquid formulas that you can mix quickly with water. Obviously, work within your economics and hectic schedule but once your baby is established on formula, you can switch between these different types as you need to.
Once you pick a formula, it won't take long to see if your baby doesn't like it or if it doesn't agree with her system. She will tell you unequivocally with fussing, crying, turning her head away from the bottle, spitting up, vomiting or with some truly awful diapers and gas. Definitely consult your doctor on this but you may need to switch to a formula with low or no lactose or one made with soy milk. In any case, never, ever attempt to feed your baby regular cow's milk or soy milk... they are simply not nutritionally complete enough for a developing baby.
If you can, you should definitely continue to let your baby breastfeed before offering a bottle. For me, it worked something like this: I would make up a bottle first, then sit down with my baby to breast feed. When he lost interest in breastfeeding, I would offer him the bottle and, if he took it right away, I would let him drink as much of that bottle as he wanted. Be aware that sucking formula from a bottle is so much easier than getting it from your breast that your baby might become "lazy" about breastfeeding so always breastfeed first and be absolutely sure they are making an effort before you offer the bottle.
Finally, how do you know if your baby is getting enough formula? Not surprisingly, you will know if you are feeding your baby enough formula by looking for the same signs of satiation that you do with breast feeding: sleepiness, falling off the bottle and what every mother might call slight "intoxication."
In the end, the very best thing you can do is trust your instincts and not worry too much, anyway. After all, we're talking about our babies!
