Stock transfer from father to son

Due to severe illness, my father is not able to continue his business. I have taken new gst number and filed itc 02 as suggested by accountant. My father s cgst credit ledger is showing rs 4000 . But its not getting transfer to my new gst number. How to do it ?

There is stock of more than 1 cr in my father s firm. How to transfer stock to my gst number ? is there anything else other than itc 02 ? Pls suggest.
Thanks a lot.