I have a friend that says that, citrus stop to grow if the pot is very big, he adviced me to change pots imcreasing size only a little each time.
That could be due to the soil that has no roots in it not draining and causing the whole pot to be waterlogged. That's the problem I had with my banana plants and now I never grow them in too big pots. If it drains fast enough then you should be fine
This is what I meant by making my own pots out of bags to grow in. I found some cheap plastic tubing online so the roots can go down 50cm about 20 inches so the plants should be able to stay in there for a while. The plant in my hand and the ones at the back are Citrumelo Yuma that Florian sent me and the rest are citrus aurantium that I grew from the seeds from sanguinho