CANCELLATION OF GST (ITC IN 3B IS NOT MATCHING WITH GSTR2A)

I have to cancel my GSTIN because my TO is less then 20 lakhs. But when i am matching all the data before cancellation, i have found that ITC claimed in 3b is more than Gstr2a. The data in 3B is right and the opposite party will file in march gstr1, but i have to cancel gstin now. What should i do please suggest???