Going to add, no books, keep down the paper, remove carpet (if possible), wash bedding often, no feathers, no curtains, no smelly stuff (candle)

Pets, smoke, plants can be adding to the struggle.

Try sleeping up a little more for drainage. See a doctor to ensure it's nothing else.

Seriously, take an allergy pill every night all year. It might take a few tries to find the right one.