My citrus tree is a calamondin tree, grown in a container. From what I have seen with my tree, it started to make more profuse blooms on the third year and then followed by the fruits, usually around late Spring to whole of summer when it is much warmer here and it is getting more direct sun. I have observed it really likes lots of watering here, there was a year it delayed the fruiting and I realized I may have been underwatering it. But once I gave it more watering, especially during our very dry warm periods, it has resumed making the fruits as soon as the blooms are gone.
Right now it is making new little blooms again, and some branches are having some new fruits, and some older branches still have some old fruits I have not harvested yet. Our temps are rising fast now, in the mid 70's to low 80's, and with the city trees still asleep, it is getting more sun.
It really is a tree for the outdoors, so just wait till your outdoor conditions improve, and give it all the sun, water and air you can give to improve its growth.
