Yea, take it seriously. You can get suicidal. Both Klonopin and Remeron can cause withdrawals. You shouldn't stop both at once.

You could ask to switch to the "same" amount of the cheap and long acting valium and taper it out (if you tolerate valium).

A doc would proably suggest to start at 15-20 mg a day. Can you talk to the psych about it?