Here in london the morning temperatures are about 10-13 degrees and I've already started to see some ice forming on cars. My tortoise enclosure is about 20c in the morning. I wont be brumating my tortoise this year because he has only turned 1 and from what I've read you shouldn't brumate them in the first year if they are captive. Is it necessary to brumate them in captivity? I have an eastern hermmans.