What can I use to heal nipple cracks and prevent any further infection? Is there anything else besides APNO and lanolin that could help me?

You can also try using coconut oil or olive oil to help heal cracked nipples and prevent further infections. These natural oils can help moisturize and soothe the skin, promoting healing. Additionally, keeping the nipples clean and dry, changing nursing pads frequently, and ensuring proper latch during breastfeeding can also aid in healing and preventing infections. Consulting with a healthcare provider for further advice and evaluation is always a good idea if the situation does not improve.