Is this normal poop?

Desiree

I need help! First time mom here! My son is 5mo old next week (premature 2 mo) and his poop has changed to a liquid clay like texture. Its still “yellowish/green” but extremely thick and it gets stuck all over, on top of running out through his back and onto his clothes, our clothes lol

Is this normal poop?

He is a formula baby on Nutramigen.

He goes once a day.