I had terrible night sweats after my surgery/radiation and being put on letrozole. One thing that has really helped is the supplement Evening Primrose Oil. I take a capsule of 1000 mg at night before bed and within a week or two my night sweats diminished significantly (and that is a very minimal dosage). Where I would have night sweats for hours before, I rarely get them and if I do they go quickly.

Of course, check with your oncologist before trying a supplement, but mine had told me that this was safe for me and it has really helped.

Good luck in your journey!