Yes you can! I did both breastmilk and formula with my guy, separately and combined. I was in the same boat as you, never produced enough to satisfy him.
@twinpower_94, eventually yes! In the beginning when he was nursing more (still formula supplemented), He always had breastmilk poop. And would pop multiple times a day. Then when his appetite increased and my supply didn’t go up (long battle with that) he started having more formula and depending on the day, he would have a green formula poop. Sometimes mixed! And as he’s gotten older he poops once a day. He got gassy sometimes, so we’ve had him on Enfamil NeuroPro Gentlease, and has had no issues at all! 😊
Yes if your trying to switch over and having a hard time it should be fine
Yes