Please help! This is my first Bonsai. I believe it’s a Sageretia. I got it in the early summer and ended up putting it outside where it flourished. I was going to leave it outside all winter in one of those mini greenhouses (plastic covering) but after a couple of weeks doing so I decided it was getting far too cold to leave outside. I brought inside at the beginning of November and it sits on a windowsill in our living room. It gets quite a bit of sun there but our house does tend to be warm. I regularly give it water but I would say over the past week, it hasn’t ‘drank’ much as there is always water in its pot. A lot of leaves have turned brown and crispy and fallen off and there are quite a few that have turned yellow. Is there anything I can do?
Thank you for any advice!!