Hi there ~
I am sorry to hear that your son is having troubles in his sleep. I understand that the medications are helping him but he continues to occasionally have problems in his sleep. It would be helpful to distract him during the daytime when he is not doing anything and thinking negative thoughts. However with regards to sleep, maintaining good sleep hygiene
and a good daytime routine are helpful. Medications may help to make his sleep better, however I recommend that you see a qualified psychiatrist
to help your son with his difficult sleeping. I hope this helps.