@Gordon Shumway -

That's GREAT! 

I think the important thing is you are learning to be aware of independent movement in parts of your hand & fingers!  

My Arcus bow is EXTREMELY lively.  It begs to bounce, so it inadvertently helped me learn to use my fingers, parts of my hand & wrist better by immediate feedback! 🤣  It's all pretty amazing - don't think anything from the wrist to the fingertips is truly passive.  Kinda gives new meaning to 'fine motor control' - more like 'SUPER' fine. 

Taking a little time to consciously move the wrist, parts of the hand & fingers once in a while - keeps me aware & 'connected'.

There ARE good YT videos available on moving the knuckles, watching for possible tension in specific hand muscles, flexibility in the wrist, and giving purpose to each finger & thumb.  Videos may be a moot point for you, but beginners should know to look for these (starting with Fiddlerman tutorials).  

There's very helpful info in this thread!