green watery poop

hi mommies, pasintabi po sa lahat. tanong ko lang po sana regarding my LO's poop. araw araw kasi ganyan yung kulay at texture nga poop nya at sobrang baho kahit utot nya, he's almost 4 months na po. from bonna nag switched kami to nan optipro kasi matigas yung poop nya sa bonna. normal lang po ba to or should i consult our pedia na? dami ko po kasing nababasa na normal lang or sawan lang sya. pero bakit sobrang tagal kasi almost 3 months na, bihira lang sya magpoop ng kulay yellow pero watery pa din. photo not mine pero ganyan na ganyan poop nya. ftm po ako, please respect my post. i just need some advice. thank you in advance and God bless.