Keeping babies neck clean

My 11 week old is a chunk and sweats so much in his sleep. He has so many creases but the main problem would be his neck. It is an everyday battle keeping him clean and dry. I was bathing him every other day but it dried him out so much and then that became an issue in itself with finding a cream that actually moisturized. So now I’m trying every 2-3 days and using a warm wash cloth in between but it’s not the same as a bath. His neck is either raw or extremely dry where it looks like his skin is stretched from the constant healing from the A&D and aquaphor. His right inner arm is the same way since he always has it folded. I’ve tried those ointments and baby powder and they only help a little or for a short period. Any advice is helpful!