For me, even if my LO has poonami I will wait for her to cry for milk (I will put my finger under her lips area to see if she wants to drink or just wants to be soothed). It can be anywhere from 1hour - 3 hours instead of following a schedule or poop = empty stomach. However, babies are generally quite smart, they will push the teats out if they’re full. Or if you observe any spit ups (slightly more than the usual burp and spit ups)/vomiting then it’s overfeeding.