If you have all these techniques down, then it should be trivial to do in fairly short order. If you are certain you know everything then you could try to get away with skipping the reading/videos and just doing the exercises/challenges. I would definitely check in with the discord as often as possible so they can tell you as soon as you start diverging from the instructions.

I'd argue you'll be doing yourself a disservice though. If you go into a course thinking you already know better than the instructors you are definitely setting yourself up to overlook things you never considered. It is always best to approach learning from a place of humility - to go into it thinking you could find something you didn't know before. Otherwise it just becomes a self-fullfilling prophecy of sorts. You'll probably only ever get what you expect to get, and that is next to nothing. As long as I've found something I usually feel it was worth the time - no matter the amount of care I've taken or nearly how small the take-away is.

If nothing else, it is good mileage. Everybody can always use more practice with the fundamentals.

Those are just my thoughts. I am just a random guy. That isn't official guidance in any way.

You can never learn if you think you already know it. To advance in the critique system, you need to do everything anyway. I suggest you to do give the course benefit of the doubt and do them.

Besides you are supposed to repeat them as warm ups even after you complete the whole course. So nobody is above doing lesson 1.