I'm struggling with my grape bonsai. I've had him for about 9 months and he was doing very well until recently. We repotted him to a pot that was way too big about 3 months ago. We noticed a bunch of fruit flies all over him and felt that the pot may be retaining too much water. We decided to repot him to his original pot. Yeah, I know all of this movement can't be good for him, but there's nothing I can do about it now. He is kept indoors, gets ample sun and is watered regularly(whenever he seems to need it). I live in Southern California right near the ocean. It is typically very humid in the morning and then moderate during the day.
His bottom leaves are turning yellow and brown, but his top leaves look ok. The fruit flies mentioned above are now gone.
I'm a novice both on taking care of a bonsai as well as posting on here. I couldn't figure out how to attach pictures, but below is a site where a friend of mine let me upload a few pictures.
Can anyone lend some advice? m