Catteleya Hybrid dropping green leaves, is this normal?

[wilson79]

(Aloha Case x Hunting Island) "Hawaii"

I've had this plant for a few months now and it had one big beautiful fragrant flower when I purchased it. It has been doing well even since the flower wilted, but recently has lost 2 leaves. They were fully green when they dropped from the plant. A few weeks back I moved the plant up in the pot because I was worried that the roots were not drying enough in between watering. It is potted in miracle gro orchid mix, which I know isnt great, but was all ive been able to find so far in my town. I generally mist the plant every other day and have it sitting on an improvised humidity tray. It is inside and gets indirect sunlight during the day. Any ideas?