I would recommend CBD (marijuana without a high) for sleep.

You mentioned "racing thoughts" in the past. Racing thoughts are a symptom of Bipolar I. If you indeed had racing thoughts and still have them, but to a lesser extent than before, then what you have is Bipolar I rather than Bipolar II. It is very important to obtain a correct dx, even if you plan to avoid medication.

Your views on medication are outdated. Lithium is prescribed less and less. I am coming off of it after many years and wish I never started but instead took drugs that are more modern. There are lots of options now, and with some trial and error you may be able to retain your charisma and free spirit while at the same time curbing the symptoms such as unpredictable sleep. Still, it would be very interesting to learn of your diet and other methods of living with the disorder without medicating it.