The work does not care whether you feel inspired, only whether you arrive.

The task is indifferent to your internal state. A page written reluctantly counts exactly the same as a page written in a burst of enthusiasm, and after a month you cannot tell which was which by looking at the work. Feelings determine how the session goes, not whether it counts. Attendance is the whole requirement.

Stop consulting yourself about whether today is a good day for it. Set a time, arrive, and let the quality of the session be whatever it is. Some of the best work you do will come out of sessions you did not want to start.