I’ve had hayfever since I was kid. It blows (pun intended)
I’ve got better management of it these days. I take daily cetirizine (cheap generics) same I do think the timing of taking a dose helps - I now take when I go to bed rather than when I wake up.
I also use Mometasone nasal spray (prescription) as it treats inflammation rather than allergy. I never had any luck with any other nasal spray, but this works, taken before bed. Gives a bit of a sore throat as you drift off mind, if you manage to get it down you throat.
The other thing I do is take ibuprofen if my nose does get too congested and sneezy which at least easies off some of the symptoms.
Using local honey is meant to be good for getting you better accustomed to the local pollens but I’ve not had much luck.
I did try cutting diary for a year and moved to goats milk. I would say this had a placebo effect but definitely for some of that time I was less sniffly… But my regime now has produced better, lasting results