My husband is 74 years old has been diagnosed with essential tremors. He is taking 100 mg topiramate 2 times a day, clonazepam 0.5 mg 3 times a day for tremors, metformin 500 2 times a day for sugar, pramipexole for restless leg, atorvastatin, enalapril and b complex. Something is causing him not to sleep at night. any ideas what we do to help him.