Keeping a good bend in the elbow really helps. Also I recently started finding that rotating my forearms so that my elbows point outward a little bit also helps. Not sure why, but I don't have to keep as much elbow bend when I do this. But it's not natural for me so I have to work at it to maintain the elbows out. And going to the drops quite a bit and changing hand position helps.
Though some will laugh, push ups and other exercise to strengthen my upper body and waist seem to help now that I'm over 60 yo and not as active doing everything else as I once was.
Also less padding on gloves seems to help too. But with everything else changing for me, it's hard to say if any one thing is particularly the most helpful.