Yes, I prefer to use small doses as well, usually for night time or as you do, to come off of amphetamines.
I keep it from .5 - 1.75 mg of xanax or 1.5 of klonipin( not together of course) and have not had any problems from doseing a few times a week, but when used every night, even at such a low dose, the withdrawals can still come, just not very sever. If I have been taking 1mg every night for more than 8 days straight, then do to short of a taper, I will feel like shit for about 3 days, maybe 4 depending, but its usually better by then.
Keep the xanax dose below 2mg max, and dont do it every night and you will be fine so far as withdrawals go, however benzos are very psychologicaly addictive, meaning your body is not yet physically dependent on them, your mind may be, like you feel you have to have it just to get to sleep or to get through the day, or daily anxiety, ect.... which will lead to withdrawal symptoms if continued.