My fave tips for staying warm in a tent are about dryness:
Keep tent/inner/sleeping bag closed at all times possible during dusk/evening/dewfall to keep things dry. Wear waterproof clothing during this time too.
Dry your feet really thoroughly with a towel before putting some dry warm socks on for bed. Weirdly, a very effective measure.
My fave tips for staying warm in a tent are about dryness:
Keep tent/inner/sleeping bag closed at all times possible during dusk/evening/dewfall to keep things dry. Wear waterproof clothing during this time too.
Dry your feet really thoroughly with a towel before putting some dry warm socks on for bed. Weirdly, a very effective measure.