Quarterly GSTR-3B

Hi,

I accidentally forget to enter 'zero-rated' and 'nil-rate supply' values for June 21 in GSTR-3B

Is there a way to rectify it?

Can I add those missed values while filing October 21 GSTR-3B?

Let's say 150000 for June and 150000 for Oct.

Can I add the zero-rated supply value as 300000 for Oct since I entered 0 for June?

Thanks for the help in advance