Take a break. Put your stuff away for awhile.
I knit, crochet and scrapbook in addition to quilting. I burnt out on the scrapbooking. I put it away for a year. Still not edge back, so I'm going to finish the two trip books and then pare down my collection of stuff. The thing is, sometimes you lose interest because, well, you have lost interest. Most of the time, you just need your mojo back.
Keep in mind that sometimes depression can affect your whole life including interest in hobbies. Without meds, the average person takes 1-2 years to get out of a depressive funk.