Cradle cap - have tried everything!

Lindsay
Ok maybe not everything. But looking for suggestions.
My daughter is 6 months old and still has cradle cap. Have tried Aveeno body wash/shampoo, coconut oil (makes hair smell like vomit for days), olive oil, baby lotion, and a special dandruff shampoo that her doctor suggested.
A bit has come off but a lot is still there.
Ideas?