Before I had my mood stabilisers i found it really difficult to sleep, are you off them becuase you personally have decided not to take them or have they been taken off your prescription or you've run out etc? I would make sure that you do take what is prescibed to you. If you have not been prescribed them and are finding it difficult to sleep obviously you need to have a conversation with your doctor. Currently I'm not sleeping despite being on mood stabilisers so they are going to prescribe me something to help me sleep which of course would be the other option for you. Not that you actually make the final decision youself
Good luck anyway, I hope you get some sleep soon!