Welcome, Chokin!
It sounds like it's still a bit young, especially if it is a seedling tree, rather than a named variety. Like many other stone fruits, it will take 3-7 years to bloom. You can increase the chances of it blooming next year, by feeding it tomato food a couple of times this summer. The extra phosphate and potash in that will help stimulate plant maturity. Unfortunately, pruning will only delay bloom.