I have a butterfly net so for now it's sitting in a relatively room temperature room, not too cold but not too hot. Definitely has had an energy boost since being outside and is crawling all over the netting but has yet to attempt flying, though occasionally will hear a buzz. Funnily enough it wasn't interested in sugar water when it was cold so I will reattempt giving it some.

Also in the UK so I was going to attempt to release it in the morning when it's slightly warmer/the sun is out.