I recommend spending a week doing light aerobic rides. Gradually increase your ride duration as you feel healthy and energized. If you get run down, back off and rest.
Spend a second week doing the CTR plan week #1 but only do 50% of the rides. Miss out the test and pick the longer and lower intensity rides.
Then restart the plan at week #1 if you feel ready. After a successful week #1, get back in touch with me and we can look at exactly how much training time you have left then which weeks to drop from the rest of the plan to get you to the race start ready.
Lynda