Maybe you need to change a perspective. Maybe you need to look at your organ practice from a fresh angle.
And you know what's one of the best ways to do that?
Take a break and go do something which you haven't done before. Anything. Actually something which you are unlikely to do ever again.
For some people it might be skydiving. For others - reading poetry or going for a walk into the forest and listening to the sounds of the creek.
Remember, you don't have to play 7 or 8 hours a day hoping to have a break-though.
Sometimes a breakthrough will come suddenly, when you look with awe at bumblebee.