Hand Cramps

I got 5 kilos overweight so I cut back on fluids, and used a red and green bag. (under 48 oz. per day). The first night I took off 2611 total UF. The second night I took off 2048 total UF. I'm down to 91.7 kilos from 96 kilos. I'm happy with my progress, and I feel a lot better, but those cramps hit me about 1/2 hour after I get off my Baxter machine. First they hit my left hand. I took a few swallows of pickle juice and tonic water. They went away, and they reappeared in my right hand. Now, they're gone, but I'm constipated. I think its the 3 renvela pills I take with each protein meal. The miralax powder and lactulose haven't kicked in yet. My phosphorus has been up for 3 months of labs, and I have to get it down. I know most of the tricks for handling cramps, but I'm always looking to learn better coping methods. I have a weakness for cheese, and that's what's driven my high phosphorus numbers. I've cut it from my diet, totally.