Formula causing diaper rash?

K

My daughter (almost 7mo) has been fighting diaper rash since she started daycare. When she first started and was on breast milk it was too bad. I attributed it to the longer time in soiled diapers.

When she was home with me I changed her multiple times an hour if I saw her diaper was wet. At school they check every hour or two.

When my stash ran out we had to switch to formula and her diaper rash got real bad. She went from pooping maybe once a day to 4 times a day. Idk if the formula is upsetting her stomach and making her poop more and then she sits in it... but idk what to do.

She has cream applied every diaper change. Daycare is checking her every hour and when shes at home she us getting oatmeal or breast milk baths. Her diaper rash typically clears up on weekends (maybe because I'm still breastfeeding her).

I just don't know if I should switch her formula (picture down below). I just ordered a $30 tube of high octane butt paste. I hate how uncomfortable she is and want to make it all better.

Any tips and or suggestions are welcomes