You may change baby soap to a gentle ones like baby gaia or seba med. You can try kodomo baby lotion or seba med lotion. QV cream is like moisturiser which I am also using due to dry skin and rashes. I was also given steroid cream but I didnt use it to avoid my skin dependent on it.
My baby had something similar and pd prescribed steroid cream. It’s quite strong so only can put a bit and only for one week max.
if it is heat rash can put some bb powder at all his join area too
I used tapioca flour as powder and these rashes disappeared
snowhitee
Nur Syafinah