Can you do more things where you are dancing but not reliant on a partner? I know you are doing Ballet, is there room to extend in that direction? I would hate to have to give up too. After my enforced 2 years where I did hardly anything, I am getting back into things. So pleased that despite the recent diagnosis of osteoporosis in my spine (it is 85 years old, according to the graph. I am still allowed to dance. In fact it is really good for the osteo. The doldrums are always with me - they rear up when I yearn for what I don't have (access to lessons more than once every 3 months, a comp partner, breasts) rather than focusing on what I do have (access to a free space to practice, a sometimes fun dance with DH, legs, and my life).
If you would like some advice, take a break. Save the money you would spend on lessons, and go on a really cool holiday.... or do something else with it to help yourself feel happy. I have dreams of one day going on a trip to another country and having lessons for a month with someone whose dancing I really admire....a long away dream, I don't even own a passport