QRMP scheme

Hello All Respected Experts,
One of my Client turnover in previous year (FY 2019-2020) was below Rs 5 crore. In previous year also, he filed Monthly GSTR 1 & GSTR 3B.

In Current year (FY 2020-2021), Turn over is above Rs 5 Crore upto 31st December 2020 and he is filing all returns on monthly basis.

System default enable QRMP scheme to his GST Number due to below 5 Crore turn over in last year.

if we file IFF they will take Invoice upload upto 50 Lakh.

please suggest how we can opt monthly basis, as we have filed till date. and other measures.