I've had tendonitis in my left hand for a similar length of time as you. I kept it from healing by training through it for a month (although I never realised I was injured to that extent).

I keep it in the splint the hospital made for me, for about half of the time.

I layed off from boxing so it could heal. I did 6 rounds the other night to see how it was doing but the next day I could feel the vibration in my knuckle & so it wasn't healed. So still no more boxing for a while longer.

I haven't gave up breakdancing though. Still doing it.

Start breakdancing, it's a cool hobby. Last night we done a freestyle session & the instructor threw some serious shapes including the windmill, which looked amazing - the windmill is the pinnacle of breakdancing & I'm pretty sure literally everyone would love to do it whether you're into dancing or not. I definitely intend on getting to that level where I'm throwing out power moves with ease.