I'm on Xanax 1mg 2 times daily. Is this considered a large dose? How to safely come off the med?

Hi, guy!
Xanax may be prescribed up to 4mg/day and in some special populations even higher so, no, you're not taking a huge dosage. But it's high enough and you've been taking it long enough that your metabolism is likely to be habituated to it.
It's very difficult for most people to discontinue benzodiazepines, especially Xanax. Follow massos's advice and do not attempt to do this yourself because you need professional supervision and a reducing dosage schedule to follow.
Assuming you're taking it for an anxiety disorder you may also want to talk with your health care provider about some safer alternatives such as the antidepressant/anxiolytics and a medication called buspirone which is often indicated for these disorders.
Best regards and I wish you a safe and comfortable withdrawal.

You should talk to your Psychiatrist in order for him/her help you with a discontinuation schedule and follow it under his/her supervision. You must stop this benzodiazepine gradually in order to avoid withdrawals.