Progress is not linear. I know you’re bummed that your FTP is still 20 waits lower, but if you keep progressing and it is 240 by next October, then on a year over year basis, you would have improved.
Also, I would not put too much stock in just your FTP number. I think we all have a tendency to look at that number and tie our self-worth as a cyclist to the number, especially when there are other metrics that are of equal or more importance. For instance, is your time to exhaustion improving? Can you hit higher numbers on a 5 minute effort? Can you ride longer?
Lastly, I know you said you are doing the century plan-what volume level are you doing, and how old are you?