Babies takes demand feeding on breastfeeding. But on formula feed there is chances of over feeding. Over feeding causes excessive passage of stools, gas formation, vomiting, spitting.
You should worry if any above symptoms are there.
Dont keep on bed immediately after feed. Give 20minutes of burping.
Next Steps
try to reestablish breast feeding
Health Tips
breast feeding has more benefits than formula feeds. it is the best food baby can get.