I've Been Diagnosed With Mobitz Type II Diagnosed 4 Weeks

I've been diagnosed with Mobitz type II diagnosed 4 weeks ago. I'm starting to experience anxiety which increases my irregular heartbeats, and I feel lightheaded more often. My PCP prescribed Klonopin for me. But every time I need a refill I have to go through a lot to get it. I've had three refills thus far. I'm a Registered Nurse & I'm seeking other anti-anxiety Medes that may help me. My Cardiologist says I will need a pacemaker. I'm only 51 years old. I have to complete a Sleep Apnea study first. I'm seeking other mess my PCP may be happier with prescribing me. I've never had an anxiety issue in the past