Layer your clothes so you can peel off and stay decent, cool spray, mini fan, cooling pillow if you don't have cats ( they puncture them)
Old fashioned thin cotton nightdresses, keep spares by the bed for a quick change and big cotton towels are quicker to change than sheets.
Avoid alcohol, it really does make them worse, shops with air con are your happy place, but don't do what my sister did and be asked to leave m and s because she was standing almost in an upright freezer cabinet.