Hello I’m new to bonsai. 3 days ago I received a Chinese elm tree and I was a little disappointed because the leaves were very thin through out the tree and there is constant yellowing on the leaves, any advice on how to make this bonsai flourish? I put the Chinese elm by the window which only gets 2 hours of light, I have also added a small grow light to the plant so it gets additional light. I’ve only watered it once since I got it. Please help thanks!