I am sorry about your sleep issues. I know someone else with grinding problem and the mouth guard does help them alot. It may just take getting used to. I bet that may be why your healing is taking a little longer. Everyone is a little different and has some variation in symptoms. 9 weeks is still not that long from what I have been hearing. As hard as this sounds, being patient and doing whatever it takes to rest seem to be the consistent advice. I would try something else for sleep. Go back to neurologist or get second opinion, if they do not deal with PCS stuff frequently. You need sleep and low anxiety. Easier said than done, I know. You are not alone and hang in there. Do not let anyone make you feel you are not doing your best. The fact that you are 17 and being as resourceful as you are, is very admirable and I respect your motivation to get better. It will happen soon I bet. Stay strong