This is the second winter with my iguana. And she seems to stop eating every January and February and into March. Is this normal.I just changed uvb lights (every 6 or so months to account for radiation depletion) I use uva heat lamps. I use multivitamin and calcium supplements. I change the foods she eats so she doesn't get bored with it. Just want to know what I'm doing wrong. Or why she won't eat. (She: shows currently the characteristics of being female).