I feel for you, so often people who do not sew or quilt or paint in my case, do not know how much time effort and expense go into these things, they think you can just conjour them up!! I think I would start saying sorry but you have a list as long as your arm and can not take any more orders right now, they will soon get the message, if it all becomes too much and is no longer enjoyable, there is no point to it I feel, that is MHO.
Gal