I'm tired AF but also really wanna watch TeleTubbies
Do you want to do anything else?
No, I just wanna watch it
Sleep is an essential function that allows your body and mind to recharge, leaving you refreshed and alert when you wake up.  You can watch TV anytime, but if you are really tired now, maybe you should just go to sleep and stop thinking about it?
I am not sure what to do.
I think I can understand your confusion, though.  TeleTubbies is a show that is designed to be very relaxing and calming, so maybe your brain is craving that kind of comfort.  Maybe lie down and watch it, and let yourself drift away for a short nap, then if you're still tired, go to bed for real.