Seems like the treatment options are evolving pretty rapidly and these options aren't available everywhere. Or this is what I was told.
You were told wrong. Shots have a ramp-up period and then a five year maintenance period where you get one shot a month. Afterwards, you've effectively been cured.
[1] https://www.honeyshoney.co.uk/blogs/news/local-honey-and-hay...
At least, that was my experience, I blamed Cambridge, then moved back or even when I visited before that had it just as bad in the town I grew up in. (Cripplingly painful eyes, sometimes migraines. Nose generally fine, but steroidal nasal spray is the best I've found off prescription for my eyes. Eye drops only really seem to help by way of lubrication for me (even though they are active), and pills (best I've tried is fexofenadine) don't give that instant relief.)
I heard that you can choose between pills every day for a prolonged period OR three injections over a year. Not sure how accurate this is, but every "allergologe" provides this in Germany.