Was taking clonazepam once or twice a week for months, running out and cardiologist won't renew. just stopping ok? was given 2 help sleep cuz of heart

No worry: Once or twice per week should not give you a withdrawal symptoms. See your PCP for sleep evaluation or referral to a sleep specialist.

May stop clonazepam: Once or twice a week is unlikely to lead to addiction or tolerance. Most likely limited if any withdrawal symptoms. Klonopin is long enough acting to taper itself when stopped as well. If you still have trouble sleeping, a sedating antihistamine over-the-counter like Benadryl, (diphenhydramine) which is in most sleep meds anyway, or melatonin may help. No television or electronic devices around bedtime.