@simrin-- Actually, it's possible for some Egyptian cotton sheets to cause sweating. It all depends on the number of threads and how the threads were weaved. Sheets that have a tight weave with a large number of threads breathe less. So they can feel hotter and absorb sweat less. I had a 1000 thread count Egyptian cotton sheets with a tight weave that had this problem.
You should look for Egyptian cotton sheets with fewer threads and a looser weave.