Shifting from gst to non-gst

Dear Fellow! I maintain accounts of 2-3 clients in which we were charging ST on rental income. By the end of the year, we realized that the total value of supply is Less than 20 Laks in all three accounts (individually). In the current year, the amount will be more or less same. Can from 1st April I choose not to charge GST? if yes, What other factors should be also be considered?

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