I have a beautiful Meyer lemon tree that I bought and planted in a big container located in my rooftop terrace. It has been happy and producing tons of lemons for two seasons already. I think it must be about 3-4 years old but I'm not sure. The only issue is that it is leaning to one side. The weight of the branches and fruit did not help. The pot is level. I am planning on pruning in mid to late winter (here in Southern California), but was also wondering if I could loosen the soil to try to straighten the trunk but I am afraid I might kill it :(. Any advice?