Hello, I wanted a bit of advice re my Bonsai Tree. I got given it as a Christmas present the Christmas before the one just gone (so December 2015). When I was given it (it is a Chinese Elm) I was told that it had been bred so that it would be in leaf then, even though that was not its natural time ( I don't know the veracity of whether it was) - it certainly had leaves and looked as you would expect. We loved it and cared for it, and it seemed to prosper and grew really strongly, some of my family said rather too strongly - i.e., its green leaves and shoots were all over the place. We cut it back, and then it continued to be okay, and then it seemed to stop growing and shooting ( but still had green leaves) .It was sitting by a sunny window, and we had some quite strong sunny days, and that seemed to make the leaves drop off. So we move it out of the direct sun, it then seemed to get some flies, so we also re-potted it. We moved it back to the window when the hot sun of summer had stopped, but now it seems to be dormant and didn't grow any leaves again in December. I don't think its dead and am wondering whether realistically - it could have had its growing spurt Dec/ Jan -March but and is now sitting waiting for the typical spring season. It is currently not growing at all - no leaves no shoots.
I am hoping it isn't dead but is rather waiting to pop out into bud come March / April when the sun returns, also I wondered if it would help if I trimmed back some of its subsiduary branches so it doesn't have so much work to support it - also I wondered about a UV light to help it along.