DV - I'm probably the LAST person to give hot flash advice, since I'm not quite there yet. But I do get mini-heatwaves depending on where my hormones are, and I can tell anyone exactly which day(s) I will wake up in a sweat in the middle of the night.
For me, a big help is my FEET. At least at night. If your feet are hot, your body is hot. I have a routine of spritzing lavender spray on the soles of my feet before going to bed, and the cool spray really helps me calm down so I don't feel quite so HOT before getting in to bed. Also, the aromatherapy benefits being on my feet (and not just under my nose) are subtle but super helpful.
I know it's not going to solve anything major, but I just wanted to throw it out there as a tiny I-hope-this-helps. Also it's natural, so won't hurt anything. Keep a spray bottle by your bed, and if you're woken up in the middle of the night maybe spritz your feet? If nothing else, your room will smell lovely. Your linens will too.
