Hey mummy, my baby had infant acne. My advice is dont use soap on the face. If must - use soap free cleanser like QV or physiogel or cetaphil.
Moisturize face regularly. Physiogel A1 is good. Normally need prescription unless u get from NSC. I m using Angel baby bottom balm as well. Use after each feed coz tt is the time i will clean her face. Worked quite well.