Your plant looks good. It is not hard to grow once you learn what it wants.
This species has a particular growth and flowering pattern. It does not seem to be tied to the seasons in North America.
It grows for a while. Then it sits for a while. Then the leaves fall off completely. Then it blooms from the leafless pseudobulbs. It can bloom many times from the same pseudobulbs, so do not divide the plant and do not throw away old pseudobulbs.
Then after blooming it rests for a variable while. Then it starts growing again.
There is good information on this plant here on Orchid Board:
Dendrobium laevifolium in bloom
It may burn in direct sun. Move it to bright indirect light.
It likes to be evenly moist all year with no water rest period. Many of us check the moisture almost every day, and keep the top of the medium just moist to moist. Many like to use a spray bottle to spray only the medium, in order to keep water off the plant.
It may not want much fertilizer. People grow it successfully with no fertilizer. Some give just a little fertilizer one to three times per year. Some give more fertilizer.