I was a Consultant and had to bill by time spent. I have a computer program for that. I have now converted the program to work for my quilting. The laptop is by my sewing machine and I simply start the time for the quilt I am working on. If I change projcets as I do. I simply start time on the second project which stops the time on the first project. My daughter is the one that made me spend the money on the program. Very glad she did as my billing for the Consulting is so easy to bill at the end of the month. And I can tell you how much time I have spent on each project, what ever it is.
Love the program.
PM me if you want the name of the program.