"I'm still not fixed, but since the season is already started I'll stick with ground blind hunting this year and work on my tree stand shooting early next year so I've got all summer long to perfect it."
Good to hear. You should have practiced out of a stand long ago. OK, that was my rant.....
Now as others have said, they say to bend at the waist. If you dont have a clicker, it will be hard to notice whats happening. When you dont bend at the waist, you let your bow arm do the downward work. This shortens your draw length a lot, which as you know affects your point of impact. Hang a stand in your yard, or climb on your roof and practice a bit. You will pick it up fairly quickly, but nothing beats eye to eye encounters! Once you get your "form" back from an elevated position, you will be shooting as good from the ground as you are from the tree, or close to it. Good luck......
Ken