Too light for hibernation

[NickH]

Hi,

I have an adult female Mediterranean spur-thighed tortoise that I've kept for many years. She's had a very lean year and is currently 275mm carapace length and 2.45kg, Jackson's ratio 0.12. Obviously not good, though she has been apparently healthy. I don't have comparative weights for the past few years, but some years ago she routinely weighed around 3.8kg at this time of year (Jackson's ratio 0.20).

I'd welcome advice on what to do. I've never attempted to keep her awake over winter, and have never had any success at getting her to eat when indoors, even under heat lamps.

Is there anywhere that would accommodate her in a vivarium until her weight improved?

Thanks.

Nick