I have decided to see if i can get my 3 Hermanns to brumate in my enclosure inside my outdoor barn. I live in southern pa and nightly temps in the enclosure are in the mid 50’s. Since i turned off the heaters the start of october, they have all but stopped eating they have not yet gone under the 6-8” of substrate. I am getting somewhat concerned. Is this normal for the brumating process?