You might consider buying an Apple Watch to work with an Iphone. It has a feature where if you suddenly fall, as from fainting from the heat, it can alert those you designate as emergency contacts. A relative of mine suddenly collapsed a few months ago and her Apple Watch summoned emergency responders as well as informed her son of the incident. Can be a valuable resource if living alone and doing physical work in a hot environment.
Going from 3 back to 2 wheels seems odd to me, but if it works for you then all is good. I was a 2 wheel rider for 35+ years when at 78 I had two tipovers with my Goldwing within a short period of time. In both cases I needed help in getting the bike upright again. At the same time of these incidents, my wife expressed her growing concern about riding with me. The riding was okay, it was the stopping safely that had her concerned. I ended up trading in that Goldwing for a new RT and have not regretted this decision in the two years since. I find that I don't miss the leaning in curves as much as I thought I would, and that loss is more than compensated by the inherent stability of the Spyder, especially when coming to a stop on other than pristine road surfaces. Just the other day I was out for a nice ride when suddenly the smooth asphalt road turned to soft gravel. I was caught by surprise but it was of no concern. Had I been on the Goldwing, and especially if I had been riding two up, that change of road surface could have been very disturbing and challenging. But with the Spyder it was nothing at all to be worried about, other than slowing down a bit. And just a few weeks back I took a demo ride on a new Harley trike. The ride was okay but it made me even more convinced of the superiority of having two wheels in front rather than two wheels in back.