Lots of adderall this weekend, plus consecutive allnighter attempt right now, dose advice?

Exams :/
Heres the my schedule so far taking 25mg mixed amphet salts (generic Adderall XR):
Fri: take 5pm, bed 3am
Sat: take 6pm, bed 6am
Sun: take 7pm, all nighter…
Mon: …take 3pm,
UPDATE: Mon: , take 7pm?, all nighter...
.............Tues: parachute half a 25 at 6am, crash at 10am, take a five hour energy to wake up, worked like a charm.

and thats where we are now, I have another allnighter to do tonight and then I'm done (Exam at 12:45pm). I'm really not feeling any of the good old effect I'm used to and I'm sure thats due to my lack of sleep, I was wondering if anyone has good experience in doing consecutive allnighters, or had input on whether taking another 25 right now will help, or would be unsafe...

cool beans, thanks for the input. No haters please, I gotta do what I gotta do

UPDATE: for anyone who finds this in a search in the future.