I do both, I follow hunger cues but she typically shows them around the same times so we have something of a routine
As a mum of a baby with a severe feeding aversion, please go by cues. If you force your baby to a schedule you risk them becoming averse and it sucks
Both.. I try not to go over 4 hours without a bottle, but I don’t feed him until he seems hungry, sometimes he’s hungry before the 4hour mark. I usually start off with bottle right when he wakes up and then solids an hour and 1/2 after the bottle so he isn’t too full.