At this point running on fumes is all that can be done. The motivation is gone, the joy forgotten.
The words are all there is. Expression of any kind counts. And it does not matter whether anyone else is listening or reading. You know what has been done. The affirmation comes from completion.
This is the mood of a creative crossroads. Projects that have been lived with for years are difficult to let go — even if you should. They will always be part of you, always part of your process.
The expression is continual and necessary. Sooner or later the tank will be filled again.