Lump Under Kitten Skin

ND

My kitten is 8 weeks old and for about a week I’ve noticed small lumps under the skin. One near the throat, one on the back and another just below the ear. The vet thinks it’s scabs and told me to come back in a month and to just keep an eye on it. It feels kind of like a hard cyst. My kitten did have fleas, but I don’t think it can be from biting because it’s located in places the kitten can’t reach. The kitten eats and drinks fine and uses the liter box with no issues. He has been sneezing a little. I’m worried.