So i change formula. Need help.

I used énfamil enfacare 22 calories but I make it to 24 calories for premature babies because that’s what my babies pediatrician recommended since she was born premature she was 3 months early and now she’s 11 months old and is 8 months actual but I recently change to gentlease formula because she has reflux and she’s already on Zantac she takes 1ml twice a day and she’s been drinking this for since Sunday and her poop was different I know it’s kind of weird me posting a pic of her poop I just want to know if it’s normal it kind of look green but it’s more yellowish with green ??

And this is the brand she’s taking