Local purchase and export

DEAR SIR,

WE BOUGHT ONE ELECTRONIC ITEM FOR A VALUE OF RS.100000/- WITH GST 18000/- TOTAL 118000/- LAST MONTH. MAY 21

WE HAVE LUT FOR THIS YEAR 2022-23

NOW WE WANT TO EXPORT TO OVERSEAS WITHOUT PAYING TAX .

IS IT POSSIBLE TO CLAIM THAT PURCHASED VALUE ITC AS REFUND IN NEXT MONTH.

IF CAN , CAN WE FILE THE EXPORT INVOICE IN NEXT MONTH GSTR1 AND CLAIM THAT AMOUNT REFUND IN SAME MONTH ALSO?

KINDLY EXPLAIN.