Baby 3 bulan

Aiyoh, actually quite normal lah for babies around that age, when they drink milk, the sucking reflex triggers the gastrocolic reflex which makes them poop, so it's expected timing! But if the poop is consistently loose/watery or very frequent and baby seems uncomfortable or losing weight, then better check with your paediatrician to make sure the formula agrees with him, because sometimes babies do need a different type of milk if they have a sensitivity. A few of my mum friends noticed their babies had different reactions to different brands, so if you're worried, might be worth discussing with the doc, they can advise if baby needs to switch formulas or if everything is actually on track!