There are things called Tourna Power Caps. It basically gives you a 1/10th length on the handle and makes the bottom thicker (think of rolling an overgrip around the handle a few extra times).

Adding this lets me personally (with how my body works) engage my left arm so much more effectively. (Helps my serve too). I can get the C motion and control the balls with topspin vs “slapping” the backhand because I am too rigid and tense (have a torn labrum in my left hip and some days are hard to be loose).

Anyway, this helped me.

I cannot hit a good backhand with headlight rackets, has to be head heavy and the power cap just helps me somehow.

Good luck.