Klonapin Withdrawal: Is This Normal?

I have been taking klonapin since December non stop. Two times a day, everyday. But I feel like my panic attacks are starting to go away so when I take the meds it gives me a panic attack cause I don’t need it anymore but I have to keep taking it. I asked my physiatrist how I should ween off and I tried for a few days and I feel like I’m dying. I feel cold chill, my stomach is cramping so bad, I’m nauseous, I’m having weird chest problems idk if it’s my heart or what. I’m getting head pain and everything. Is this normal side effects when you’re weening off? I’m literally just taking half a pill less than I normally do I feel like I shouldn’t be feeling this bad?! It’s scaring me. I don’t know what to do