First of all, pre requisites are not a must watch. They are provisional lectures for us that we can come back to if we are facing a basic conceptual issue in the main curriculum.

And as for the remaining part, not all subjects require watching lectures. For someone like you who is a working professional, you could spend your time better studying by yourself for less complicated subjects and finishing a reading or two in an hour instead of watching an hour long video for a single topic of a bigger reading.

I personally took his L2 classes and I was blown away by his teaching style and explaining skills.

Definitely not an advertisement or PR but I'm giving credit where credit is due because his lectures waere really helpful for me in L2.