Lately I've had lots of lucids, but my eyes are always barely open, and i feel like just collapsing right there. I can't control the dream properly either, and i fall out of lucidity after just a little while.

For example: I became lucid in a dream, and stole a red plastic saxophone from a man in a red suit. Right after stealing the saxophone my eyes went down, and I could barely see. I also felt really sleepy. I tried to play the saxophone, but I couldn't get any sound. Then it drifted away into a normal dream.

Any tips?