You may want to try bar ends to give you more hand positions; and you may consider mounting them "inboard" like in this thread:

Anyone else using bar ends this way?

My previous "jungle-gym" set up is there with inboard bar ends and an aero bar. I also have been using foam pipe insulation on my bars since my mid 40's when my hands became more crampy and sensitive.

Last year I finally converted my straight bar mountain bike to drops like my other two bikes which give me no hand pain (as long as I use pipe foam). Unlike converting from straight to swept bars, converting to drop bars required new bars (of course), a new stem, new brake levers and new shifters. It took me 6 hours (shoulda been less) and cost ~$75 since bought a used stem, bars and shifters from the local bike co-op and did the work myself. New brake levers, cabling and housings were cheap enough. But after all that work planning and wrenching I have not had and issues, which was nice in the winter, since it is my snow bike.