When baby is hungry he will ask for it when he is hungry! If he doesn’t want dont need force ah! Just follow his signals! Baby can go up to 12 days without pooping my baby girl went up to 10 days without poop! No big deal about the poooping!!!! A lot of FTM won’t know this fact! Baby should be fine!! All is good!
If baby has been gaining well and PD did not raise any concern, don't worry! My boy also only pooped every 3-5 days between between 3-5 months. My PD also said it's normal even if it's once in a week. He's on mixed feed FM and BM. Only now at 5+ months he's pooping every 1-2 days cz he started some solids.