I also have some problem with my left pinky, week and also bent abit to the left.

made it work for chords but working on getting it working with the rest of my fingers during solos, riffs and fills.

I Also bought a finger trainer and it's made my fingers stronger.. still got a bent pinky though 😋.

I use it when driving to work or just watching tv .

There is some exersises with Lisa like spiderfingers that might be good if you have'nt tryed them, made a differens for me.

Good luck

Robin