No, it shouldn't..Once you've gotten through the initial withdrawals, minor symptoms might persist for a couple of months. Your brain is readjusting to functioning without supplemented GABA. The half-life of xanax is less than 12 hours..The total elimination time is around a week or so. If you've gone a week without them, your brain is starting to heal from your previous benzo abuse. If you take xanax in the meantime, it should not induce withdrawal symptoms as you've already broken the physical dependence but it may slow the rate at which your brain is upregulating your GABA receptors..There is also a phenomenon known as kindling. This is when a person who did abuse benzos stops taking them, then months later they can take one pill and it induces intense withdrawal..There is a supplement called L-theanine that can boost gaba and speed healing. It's an amino acid that is the building block of GABA. You can get it in any Holland & Barrett or any equivalent shop. Omega 3 will boost your brain's healing aswell..CBD might be of help aswell. It's legal and available in the same shops though other brands are said to be more effective than the one available in the above shop. If you suffer from symptoms of anxiety such as racing heart, shakiness etc, maybe talk to your doc about propranolol..it's totally safe, non addictive