Rashes issues

Hello po mga mommies, my babyboy is 1 nd half months heavy wetter and pooper lagi po xa nagrashes sa puwet.. i tried wet cotton +calmoseptine/nappy then diaper (tried pampers/huggies/EQ Tried running water+jonhsonsoap then calmo cloth diaper sa araw disposable sa gabi rashes pa din. We always change diaper every poop or kahit d nagpoop basta 3hrs na.. First time mom here, patulong po😭😭