Well, I'm a good bit older than you are, TRNR, so maybe that's the reason I see it as I do. I would say that at age 66 I was still dealing with medications to maintain proper brain chemistry and probably would be now if I hadn't learned what to do about diet and various foods that make bipolar illness worse for some of us.

I see the racing thoughts as a symptom of a hypomanic episode. I see that your
psychiatrist is treating that for you. Good.

Sleep, as one ages, is somewhat dependent on help because the Pineal gland (which controls the production of melatonin) calicifies in many older people. So an elderly person must deal with the reduction of melatonin by supplying the diet with things that boost melatonin or take meds or reduce acidity of tissues and fluids to obtain a more alkaline condition. Insomnia is an almost universal experience to a degree; it's defnitely not peculiar to bipolar illness alone.

Take care.