i usually sew every day, but hit "slumps" every once in a while. i haven't sewn much at all for the past two weeks. i look at the machine. i walk around the space trying to talk myself into working on something, and then i wander off again. i'm not worried. it will pass.
quilting should be fun. so, when you don't have time or don't feel the urge, no sweat. it'll be there waiting when you're ready. :-)