I'm currently in a pretty unorganized training regimen....do what I can, when I can. I've got a few races left and should be done in 3 weeks for the year. Over the off season, I have a few goals.

I really want to build up my FTP before the spring. I plan to dedicate several months to a cycling focus. I'm currently estimating my FTP to be ~230 (haven't done a test in several weeks). Hoping to get it up to 275+ for next year and eventually break 300. I know if I seriously cut back on swimming and running, I can make some great increases (currently only riding 3 x's a week). What I'm worried about is that when I start cutting back on the bike to add the running and swimming back in, how much of a hit is that going to put on my bike fitness.

I also want to spend a month or so really improving my swim stroke. Take a few lessons and possibly join a masters group. I've got a lot of low hanging fruit there. But I don't want to spend a lot of time on the bike, then cut back to 2 rides a week while focusing on the pool and lose everything I worked on.

So if I spend 3 months really pushing the bike training while riding 5+ days a week, can I maintain that fitness with 2 possibly 3 rides per week max when I focus on swimming/running again?