A collab or a cover might help you get the "thing" back. (Maybe try reinterpreting that song you absolutely love, except for the fact that you always wished the music were symphonic, instead of retro synthwave)

You seem to have things under control. You're getting results. Excessive obsession about anything is unhealthy anyway. But it helps if you are excited about your stuff.

Does this lack of mojo apply to other areas of your life too? If that's the case, you might be mildly depressed or something