There used to be workaround with backdating AI generated plan (i.e. today minus 3 months of base period). Not sure if it still works but its something you can try.
thanks Svens for the reply - i see its been marked “Trainer Road Approved” .
Tried it but it seems to have given what looks like quite a tame , mainly Z2 Build phase as per attached. My A event is 11th April , with a B and a C event in March .
I have done decent amount of work in last 3 months , Mainly Endurance 6-700 TSS a month , but with random Zwift stuff and some Threshold / Vo2 workouts (2-3 a week)
I would have expected to see more Threshold in Build Phase
Yes, what @Torneng said. If you want more intense plan, you can switch to 3 hard says and/or tweak your training balance toward aggressive approach (as a whole or per zone).
When creating new plan with Plan Builder, use some past date for start.
For example, use today minus 3 months to skip whole base period. Adjust for how much you actually want to skip.