I finally decided to submit a repair request to Nintendo after having replaced all of my thumbsticks at least once. They let you do up to 4 online without talking to anyone, so I sent in 4 and just got them back yesterday. They just sent me 4 brand new joy cons. So hopefully these should work for about 5 or 6 months...
It was pretty painless though, I sent them in on 12/28 and got them back on 1/13. Most of that time was waiting for slow UPS shipping. No cost to me even though I bought my Switch at launch.