Hello, I bought an orange and a lemon trees, about 1.5m each. Both have been repotted, living indoors - winter here in Canada. Orange is doing really well. Lemon isn't. I've changed the soil to make it more easy to drain, pots are standing on supports allowing for water to drain freely and air the bottom of the pot. But leaves are becoming yellow, and roll, some got really soft, although top of the tree is still green. But weirdest thing happens to the many blooms it had when I bought it. Most of them don't open, don't fall, they kind of..petrify on the tree, unopen petals encapsulating the flower in rubber-like shells. The ones which open are sickly too. When I measure moisture, it's very dry at the ball of the root and very wet on the outside, I have a moisture meter. I've read everything I could find, and as I mentioned before, I changed the potting mix etc but still my tree seems to be overwatered and underwatered at the same time. Plus, whatever is happening to the flowers and buds. I'd very much appreciate your thoughts and ideas. I have theoretical knowledge but 0 experience. Thank you!