Revised invoice

No you cannot Revised the Invoice in GST , you need to make adjustments by issuing Credit Note or Debit Notes

Revised Invoice concept is not applicable to everyone. It's just for those who've been registered afresh and needs to issue invoice between the period from becoming liable for registration and actually getting registration certificate..

In your case, as Mr. Pankaj said, you may adjust the original invoice amount by issuing debit note or credit note subject to relevant provisions contained under CGST Act..