Hi my cuke is hiding under a rock and not eating/moving for month and shrank a lot in size. I moved it out from its hiding spot yesterday and it finds a different rock to hide. I have this cuke for over a year and half. About 8 month ago, I have cleaned out the tank for new sand (medium size which i think is the same size as before) and new rock. im not sure if this clean sandbed phase make it giving up on food but my sandbed is pretty dirty now and my nassarius snail from 2 years ago is still alive shows there is at least something to eat. This cuke has been hiding/not moving for a few month but it did eat a bit at its hiding spot at the beginning as i see the sand pile, so i thought that might be fine. But now i realised i didnt see its sand pile for a long while and pulled it out from the rock and it shrank almost in half and went to hide almost instantly. What can i do to make it eat again?