Dendrobium nobile shriveled pseudobulbs winter watering

[LuaLu]

Hi! Ok I have a nobile dend. and this is my first winter with her. I have been reading that you should only water them if the pseudobulbs begin to shrivel, but they have always looked shriveled (somewhat "wrinkley" if you will). It has grown beautifully and has lots of nice roots and I'm wondering if I'm looking for the wrong thing. I'll take some pictures when I get home and post them so you can see what I'm talking about, but if anyone has any thoughts in the meantime I would love to hear them. Thanks!