11:41 AM, Saturday June 11th 2022
I think if you've kept up with the warmups and understand the concepts you should continue until you finish the 250 box challenge. If you feel like you've forgotten everything I would re-do from lesson 1 just until you understand all the concepts and exercises again. However if you choose to do lesson 1 again you should just continue from where you left off on the box challenge, because the critique from submitting that will help you understand which areas you need to improve on.
Ultimately it's up to you to decide what you should do to get the most learning from these lessons and challenges.