It hasn't worked out for me. I find that other things seem to take up my time and I have to work hard to squeeze in time to sew. Kids, grandkids, church, helping other people and other hobbies take up lots of time. I don't know how I every had time to work, and yet I think I got more sewing done then than I do now. I still do some garment sewing as well as quilting. My biggest problem is getting quilts quilted. I have 9 pieced tops in the cupboard right now and want to start another one.
I wish you luck on your dream in retirement.