George is correct in many ways. Don't gulp to fluid replacement. If you're 190 already, 85 should be no problem. Start monitoring how much you "float" overnight. Meaning, how much weight do you lose while sleeping. Getting an idea of that will help. Many lose 1-2 lbs a night as norm, but I've seen some who drop almost 4 a night, thus they know they can be almost 5 over the night before and run a little in the morning to make weight.
There will be plenty of other advice coming, I'm sure.
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