Just let it grow out. It should produce fruit. When I got mine I root pruned at the wrong time. I thought I killed it because not one bud opened for a year. 4 Years later and it's fine producing fruit, but I haven't done much top pruning. In fact I just did my second root prune a couple months ago before bud break and there are even more flowers than the previous years. Also I've read that they like deeper pots. Most of the ones I see here in Japan are usually in deeper pots.
I really need to top prune though. Thinking about doing it next season. How are these at back budding?