I live in Canada, and I brought my lemon tree inside a few weeks ago for the winter. I keep it under a grow light for 8 hours a day and water deeply every one to two weeks. Ever since I brought in indoors, it's been struggling. The leaves (it starts in the veins) turn yellow and then they fall off. It's lost a lot of leaves already and I'm trying to prevent more loss. It has a few small lemons that grew over the summer. They're still quite small so I'm wondering if it's normal for them to grow so slowly? It had some fall flowers bloom, but they dried out pretty quickly and didn't become anything. What's going on with my tree? I don't think light or watering is an issue. I fertilize frequently but I'm not sure if I'm putting enough in each time. I alternate between the Miracle Gro Shake 'n Feed (10-5-15) and Miracle Gro all purpose plant food (24-8-16). What should I do?