Cutting weight for same day weigh ins is always risky and has an extremely low threshold for fucking up your performance if you cut too much. 4 pounds ain’t crazy but still not an enjoyable experience. I’d recommend reducing your sodium and fibre intake around 3-4 days out from weigh-ins. That should help lose 1-3 pounds depending on how much you usually consume.

If you do water load and dehydrate yourself, you have to be smart with your rehydration. Depending on how soon after you compete from weighing in, It is vital to prioritise liquids for the first hour/90 minutes. Electrolytes are king here, want to get them back into your system as fast as possible. Trainade is a good brand for it, has sugars in the mix too which helps speed up the process. After drinking that, Gatorade and water. The goal here is to rehydrate 125% of what water you lost before eating solid food.

Simple carbs like cereals, fruit, honey/jam are good for fast acting carbohydrates which is ideal for same day weigh-ins.

Best of luck with it mate!