Hi. I bought this calamondin last year. I kept it indoors last winter and a lot of its leaves fell off. Its been outside all spring and summer and it has not grown back that much leaves and I think it looks kind of pale. And also it has slow growing fruits now but it looks a little sad. I fertilize it with vigoro citrus every 3 mos and foliage pro every 2 weeks. I started adding a little vinegar to the water-foliage pro solution in the past month. Its on 5-1-1 potting mix. Is there anything I can do to make it look healthier?