Finished 18 Week sweetspot,what's next

finished ss18, I’m starting in mtb xc what next Sweet Spot Part 4: Polarized , Intervals for XC MTB’ing, XC MTB’ing - In Season. On 8/08/2021 I have the national championship
Thank you for your help.

Hey @tomkulok congrats on finishing your base training!
I would recommend doing:
SS P4 > Intervals for XC MTB’ing > XC in season