Hi Teresa,
It's hardly surprising that you're feeling so tired as the Clonazepam, Tegretol, Escitalopram and the Risperidone all have listed amongst their side effects drowsiness and can cause sleep disturbances and so make you feel groggy. When I was on Tegretol for my epilepsy (now on Gabapentin) I was started on Clonazepam as well but within 48 hours of taking a low dose I was out cold and so had to stop it. It reduced the seizures but that didn't help if I was virtually unconscious.
Speaking as someone who also has epilepsy and so experience of problems with interactions between medication for epilepsy and OCD, I'd say that your Psychiatrist really does need to liaise with your Neurologist as the medications that you're on all interact with each other. The Tegretol especially changes the way the other drugs are metabolised. When I was on Tegretol I had to increase the dose of some of my medication and lower the dose of others because of this.
Having to take so much medication because of multiple health problems really does make you rattle doesn't it? You can hear me coming a mile off because of all the meds that I have to take