Been there, done that. If you're having health issues, its hard to sustain the energy. BUT, a dear friend was having to finish a top for a certain occasion. I offered to help her. So, it was sort of half a project, and half a chance to visit. It worked! We got her project finished, talked, laughed, vented - it was a win-win situation for both of us. It increased my interest & enthusiasm. And the dry spell was over. Don't stress!
It's a creative outlet for most of us & sometimes your brain just haas to percolate on an endeavor. (This was said by a physics professor of all places…)