Herman group Overwintered breeding

[Midlandtortoise]

I am overwintering my group of 7 Herman's this year as it will be our 1st together. They started winding down and loosing body weight as the temps were dropping back in early Oct. I then took them inside subsequently gained weight again They are all over 12 years old. The male has been up to his tricks (I think he thinks its spring. I have kept temps at hottest part of the day at 30 then lowers down to 21 at night. One of the largest females has been chasing other females and mounting them. I understand this could be gravid behaviour but could be a territory dominance thing. I have soil in the setup sloped with bulb above.
Has anyone overwintered their tortoise and laid?