Epidendrum is growing, but no flower spike.

[Wade Coleman]

I purchased a reed stemmed Epidendrum about two months ago. When I purchased it, The tallest growth had one undeveloped spike, which later bloomed. Since then it there have been three stalks that have been growing one leaf after another and are now about 2-3 inches taller than the original stalk. A new growth has also sprouted and has been growing at a really fast pace. It already has three leaves and is about 4-5 inches tall. Ive read that epidendrums need a lot of light to bloom, so I have it in a south facing window that receives about 2-3 hours hours of direct filtered light in the evening. With the rate at which it is growing at, should I be concerned that it won't bloom due to poor light, or am I just being impatient?