My LO has had a bum rash for 6 weeks that comes and goes but never fully heals. We’ve tried multiple prescription creams, barrier creams have changed diaper & wipe brands, baking soda baths, oatmeal baths, letting her be naked All day etc. Nothing seems to be working. To me, this all started when my Daughter start homo cows milk. My doctor just dismisses me when I suggest this as she was on formula for 6 months of her life. Has anyone else experienced this? Any tips? It’s so hard to see her in so much pain.