And as a little further info to maybe help with the “down days” problem, going at max speed will put you at about 20 new lessons per day to be done. If this is a bit too much, great, then slowing down a bit and spreading the workload will solve that problem. If you still want to do more, there are threads on here with lists of resources for things to do with the rest of your free time.
No matter what speed you plan on going, make sure you understand what workload the future will hold with your average accuracy when enlighten/burn reviews hit.