I can understand your frustration. And you have so much on your plate with school. I don't know how you do it.
I stopped taking my lithium just couldn't handle it. Pdoc thinks I should be taking it but I'm not convinced so it is on my list of topics for next visit.
Have to say I'm really lucky. Pdoc always returns my calls, usually after his last patient of the day. Only time he didn't call he was out of town and I spoke with someone else in his office.
Can't offer any suggestions. I would definitely let pdoc know you are not taking the lithium.
Take care of yourself