Milk rash on baby’s bum

Ki

So we thought baby girl had a persistent diaper rash. It’s area of the size of a dime but longer shaped and is red and raw looking near her butt cheek. The dr took one look at it and said it’s a dairy rash. I am breastfeeding and have since cut out dairy (it’s been almost 2 weeks). The rash started to get better but isn’t fully going away. He said we’d have to consider caffeine next if it doesn’t work

Anyone else deal with this??! It’s so frustrating giving up dairy and it didn’t seem to fully fix it 😩