Might I suggest doing the changing of formula gradually? also, maybe throwing in some probiotics helps? I just find that formula milk has so many ingredients it’s hard to pin point what’s causing the problem. I prefer using the simpler powder, UHT or fresh milk so then I can troubleshoot what’s causing the problem in the digestive tract. But you do you mama! :)
got same issue with enfagrow stage 3 pro+! Did you change formula?
Li Za