One or two times a week is really a small amount, but there is (IMO, of course) a possibility that you are just sorta confusing the receptors, if that makes sense? It's like once its really out of your system, you take a little more... than a week passes or a few days, the drug because of it long half life is almost out of you system, and you take it again. Now, I personally think if you were to have any withdrawal, it would be very minimal -- Something along the lines of a slight headache for an afternoon, or something. Again, i'm not qualified to say, but i think its an interesting question you raise.
There is a chance (as well, or a different theory) that your tolerance for the medication is becoming higher, and at such a small dose its not covering your anxiety. So what you might be experiencing is just your anxiety because the .5 Klonopin 1 or 2 a week isnt helping anymore? I dunno, but I hope you're doing ok...
Like the others, talk to your doc and keep us posted.
Anxiety, Panic Disorder, and Depression.
"We work on ourselves in order to help others, but also we help others in order to work on ourselves."
- Pema Chodron