@Hareem I jst be looking stuff up bout ma son maself for sure
This is very normal. The increase in poop could be due to lack of fiber if he's having mostly smoothies or pouches. When this happens I usually limit snacks to only at set times and tell them at meal/snack times that there will be no more food for how ever long and tell them to make sure they eat enough so they won't be hungry before the next meal/snack time.
Ria included great info which covers a lot of things that might be at play. For us and when we found our toddler wasn't hungry at meal times we limited or completely stopped snacks and on days where I feel like she's didn't get enough food I'll make her pasta, noodles or pizza which are her favorite and just do a hidden veggie sauce