You know, there's been tons of tricks layed out on the internet to "fix" the issue of drifting.
In my case, I still got the same JoyCon from the 1st wave days and they work fine as usual after I applied some glider under the first layer of the stick.
Anyway, if you're to play most of your time on docked mode, I'd just go for the Pro Controller instead.
I've tried to "fix" them with no results and I already have a Pro controller that I use on dock mode, funny enough the pro started drfting too but I just had to use some compressed air and everything was back to normal, I wish it was the same with the joycons tho.
I know... my English sucks.