Weaning off the breast
My baby is 5 weeks old and I started supplementing with formula a week or so ago which really helped as I don't produce enough milk for him.
I was giving him 2 or 3 bottles a day. My supply has reduced a lot more and today I provided a couple more bottles than previously, and he has been spitting up more and fussy and I feel his tummy rumbling. Could it be his body adjusting to the switch?