What set-up are you using... Could that be the problem?
I've been doing this 8 months and yet about 1x per month, my taste buds just "go away" for awhile.
To solve this I keep a few e-juices on hand that I normally can't stand. Tobacco flavors just to get me over
that (very strange) hump
Is that question to me? I smoked for 40 years, plus I've broken my nose twice, so being able to taste or smell anything is an achievement. I'm giving it time - but I have found one vape I like, so I'm really not that disappointed. I smoked the same brand of cigarettes for the last 15 years, so one vape might be enough.
ETA: I use a Twist, vivi mini nova, plus other assorted tanks & batteries. I also have a small fortune in e-liquids.