Weed isn't working "the way it used to" for me either. In some ways it's working worse (less psychodelic, etc) but in some ways it's working better.
I find myself still lovin' it, happy addicted, half a century later.
I'm finding that many strains today look good in every way possible but they are tame.
i accidentally bought some beautiful indica that just isn't satisfying to me. Not enjoyable to vape but making great decarb'ed indica flower horse tranquilizers in 000 gel caps instead.
It takes an effort to find the strains that work for me these days, but I have been successful enough (thanks entirely to a saturated Oklahoma market place) to know it's possible and worth pursuing.
I'm satisfied with the routine "head buzz", what for me comes down to a "racing mind".
Laying off causes me to forget about weed after 3-4 days. Can't have that! That's no fun IMO.
I mentioned diy edibles. Another option might be to periodically up the dosage. Beware excellent vape hits are even better an hour or two after swallowing a large gel cap stuffed with flower. Very intoxicating!!! Makes you forget about previous highs.
A better option might be to reduce the dosage to find an ideal balance between tolerance and enjoyment. Reduce frequency until you appreciate the hits. Avoid taking hits out of habit or boredom. If 2 of 3 hits aren't satisfying, just take the 1 satisfying hit and it will be much more satisfying, etc. If still unsatisfied, one can always walk away.
Maybe nerve fatigue is the true objective. It feels good to saturate my nerves with THC, even though I can't enjoy weed as much for awhile.
I have noticed that switching strains can have a negative or positive effect. Can one take a T break with a particular strain? I say this because I pulled some Tropicana Cookies out of the freezer (got 3 oz cheap awhile back). Got two hits and had my first decent anxiety attack in months. Same thing happened the second time, but the old brain seems to be getting saturated already. This might be some sort of nightmare strain.
Sorry for the long post. Very stoned....