>>12344745That sounds annoying.
Install an extension that allows you to increase the playback speed to x3.
Then Just watch like one or two lectures a day and hope for the best.
Getting motivation is never easy and every advice out there will just be a fancy version of just do it but by at least splitting up the task you have a slightly improved chance of overcoming your mental barriers.
Also if you just watched your daily two lectures and still dont feel drained watch another one to speed things up even more.
Alternatively you can try just studying with the course notes provided by the professor but that is usually much harder than watching the lectures.
No matter what you choose make sure to start today.
Good luck