We recently had to introduce formula to supplement nursing as our newborn wasn't gaining and instead loosing. So now we are combo feeding. My question is regarding if my baby is digesting/tolerating the formula well.
We introduced it when he was 2 weeks (he's 3 1/2 weeks now). He's actually having big pees now, is quickly putting on weight and is not as fussy and easier to console. I noticed his bowel movements have changed. They switched from breastmilk poops that were yellowy/liquidish to thick squig-y green, and have now morphed to a gray paste that sometimes is mixed with green or yellow. He's also quite gassy.
I honestly don't know what's normal (my eldest was exclusively breastfed so this is all new to me) and of course the internet is conflicting informstion and full of doom. He has a doctor appointment in a couple days as we're currently monitoring his growth, but I don't know if it's worth trying to get him looked at sooner.
Any thoughts or experiences are appreciated as I just don't know if it's worth taking him to emerge this weekend or wait until my doctor's office opens on Monday.
Edit to add: formula we are using is Good Start Plus, but the last 24 hours have been Good Start Soothe as thats all they had at the store when we went. He has 1.5-3 oz each feed after nursing, and eats anywhere from 90 minutes to 4 hours