Well time flys by if you are having fun. I would say try to have fun with it in some way that tricks you into ENJOYing this part of making your charity quilts. If the batting is an 80/20 you only have to quilt ten inches apart, so keep that in mind. Also there are some really nice continuous line designs that would make it go faster if you are quilting end to end.
Just get yourself in a great mood with some nice music and go for it. I think dreading it has you at a stopping mode.