No, you cannot convert physical shares to demat in 2023. The deadline for converting physical shares to demat was March 31, 2023. After that date, companies and their RTAs (Registrars and Transfer Agents) will no longer be able to process requests for dematerialization of physical shares.
https://recoveringunclaimedasstes.blogspot.com/2023/07/can-i-convert-physical-shares-to-demat.html