Hi Judyraey,
THis post is a little old, but if you still have the cattleya, increase its light levels. Many people are able to grow under grow lights, but with cattleyas, they typically need much more light. I am not a fan of potting orchids in sphagnum. I prefer to grow cattleyas in a large bark mix as they like to dry out between waterings. Here is an article about repotting a cattleya orchid.
How to Repot a Cattleya Orchid I hope this reaches you. Best of luck!
Cheers,
BD