PS : The races should help you decide what you need in training as you progress through your season. If you lack “speed” then do some more speed-type training and make sure you are properly rested before each high intensity session.
If you cannot finish your races, then make sure you keep some endurance training in your program. There are many examples of speed and endurance sets even in the GPP. Just take those and play around with them a bit, make them specific to your racing needs.
Just to be sure, do you mean modify next seasons training considering my limitations this year?
NO, ACT NOW. Every race or time trial should yield information. Use the information to adjust your training to address the shortcomings revealed by your most recent performances .