Does the cooling gel in my new memory foam mattress actually help with deep sleep?

I recently splurged on a high-end memory foam mattress with one of those fancy 'cooling gel' layers because I'm a chronic hot sleeper who wakes up sweating at 3 AM. I thought I was being a genius with this biohacking upgrade, but honestly, I'm struggling to tell if it’s genuinely improving my sleep architecture or if it's just clever marketing. For the first few nights, I felt like I was floating on a chilly cloud, but now the effect seems less noticeable. I'm curious if anyone else has tracked their deep sleep metrics before and after switching to these cooling materials? Is it a game-changer for your REM cycles, or are we just paying extra for a temporary sensation that fades after the room temperature settles? I’d love to hear if anyone found a better way to regulate temperature throughout the night without needing a battery-powered mattress topper.