Nipple thrush / pain

For the white dried part, just slightly rub it during shower then squeeze abit to ensure it’s flowing. For cracked nipples, I usually apply nipple cream then put on disposable breast pads to prevent further friction. I continued applying even when my nipples recovered. Also when my nipple hurts, I don’t latch, I pump or hand express instead. Apply some coconut oil on the flange then pump.

While I can't answer for the thrush portion, on your cracked nipples, do consider getting silverettes. These are silver nursing cups that helps to heal the nipples. I injured my nipples using the wrong size flange and the silverettes were so helpful in healing them. Just squeeze a drop or two of breast milk in the cup and wear them on your nipple in your bra.