That's a TON OF FUCKING TIME.
Stop drinking water 24 hours before, suck on ice and spit if you get too thirsty...
RIGHT AFTER WEIGH INS, take about two tablespoons vegetable Glycerol, and drink a gallon of water....and eat some carbs... take a 15 minute
room temp epsom salt bath..make sure it's room temperature or it'll make you sweat and dehyrdrate you further.....the soak will get your body absorbing more sodium so you will hold more water and rehydrate faster...
and since we're talking sodium, next day, drink pediolyte.
If you're REALLY screwed and need to lose those last few pounds, hit up a sauna, or soak and rinse in a HOT FUCKING BATH, or do some cardio in a sauna suit...that should be your last resort as it will tire your muscles too much but it's always an option....also, take a diuretic, like dandelion supplements, or even caffeine supplements....and if you're REALLY screwed after all that, take a laxative.
\
whatever you do, start getting replenished right after weigh ins...take your glycerol and water with you, drink it right after stepping off the damn scale...
but you can probably make weight just by not eating or drinking anything a few hours before bed the night before...You've got 5 pounds and 36 hours...don't stress it...I've cut 15 in 24.