Dry scalp or cradle cap? Need help with figuring out which one my baby has

Erin
My son is two months old and just recently I started seeing he has a flaky scalp which I'm pretty sure it's dry skin from the pictures I've seen of cradle cap but Wanting to know if other moms have had this experience before as well, What I've been reading says I should put vegetable oil on his scalp and brush his head with a soft brush then wash it out, so if anyone has info on this plz share!! Thanks