Our juvenile iguana is still not showing any signs of eating!?

Yes, we have proper lighting (a lamp clamp with bulb set at 90 degrees F), we have offered food twice a day (once in the AM, once in the PM), we've added a box for her to hide in, she has water, also has substrate! Help! She is looking so frail and still sleeping all day and all night. Took her out into the warm sun (96 F) and she started nose rubbing. When my husband touches her, she nose rubs. I know she is stressed! But how can we get her through it? Should we not hold her or make contact with her for a few days? PLEASE HELP! WE LOVE OUR NEW IGUANA