Though I've suggested 'bents before in jest, you might actually give a few a try. I started riding them not because I was particularly interested in them, but rather that I thought that riding more kinds of bikes would probably be good for me all around. In my experience, the logic works.

In any case, there are enough kinds of them that you might find one that appeals to you. The one in this pic is 21 lbs honest weight with pedals. It's not a great climbing bike, but even on extended climbs, I drop plenty of people. For shorter climbs, I can leg press with my back against the CF seat which allows me to put out way more force than I could on a road bike. It's fast against wind and on rollers. For all the ribbing that goes on, I find people are really cool about my rig. All you need to do is not ride like a total idiot.

Bents have an insanely wide range of seated positions ranging from upright to flat on your back. Even mine have quite a bit of latitude so you can adjust them so the weight doesn't aggravate the pelvic floor syndrome.

They actually do race 'bents but it's a different scene that you may or may not like. But if you get the right machine, you'll be able to keep working those muscle sets so that when you can get back on a road bike, you won't have to spend years getting your fitness back.

I run 650s on mine and have the full range of aero and power options. Mine as well as some others can take 700s as well so you can use your existing wheels and PT. I prefer the handling with the 650s.

You really might want to give it a try. There's a decent chance you could lose practically no fitness if you play this right, but if you have to hang back for two months it will decimate your performance.