Confused ...

Baby is 14 weeks and has just been to the post natal baby check up with doctor(delayed due to corona).Lo has red rash on body doctor said it is mild eczema.

I was using Aveeno baby lotion on him and his skin actually looks better with it.but the doctor suggested today not to use any commercial products and use just bath oils when bathing.Also prescribed steroid to use when it is worse.

I am totally confused now .What are your thoughts mammas?