baby acne and discoloration of the skin (light spots)

My 2month year old has been having skin issues since day one. Her skin is showing all kinds of things. Baby acne, light spots, red spots dry patches. I have been using petroleum jelly which helped the first time around. Now, the acne is back and with more things added in. What products would you recommend that helped clear her skin. I am at my wits end here😕 .