As you get off hydros, or any opiates, it is common to have anxiety. Just use very sparingly as Xanax is addictive too. I would take a look at the Health Pages near the top right of page. Look at the amino acid posts. There are many amino acids that can help you with anxiety and are much safer than Xanax. Have you tried exercising late in the afternoon? It may help you sleep and feel better.
I would be very very careful,the wd coming off of xanax make opiates seem like a picnic.You are just coming off of you drug its very easy to get hooked on another . You tolerance for xanax is going to go up fast that's is one of the complaints of it .what other meds have you tried for your anxiety