skipping class and other troubles

ok im trying really hard NOT to skip class rn. like im so tired and i was falling asleep in the other class i had today. and this next class. next two classes. two of the longest classes back to back from 1:30-4:15. ITS OVER FOR ME. this one class i wanna skip allows 3 absences while still being able to get an A and i know i'm allowed to use them. but every time i consider it im like wait. but what if im sick later. what if i need them later. LIKE IDK!!! i think after spring break ill be more lenient in that area because i'll have less time left. IM NOT GONNA SKIP. but i know ill be DEADDDD by 4:15 when i'm finally done with both of them. i usually cant even pay attention fully in that last class. i fear its over for me. I WANT TO SLEEP and lay in my bed and read my fanfiction..........SIGH!