How to Switch to Lyca Mobile

I already activated my new SIM card, but I want Lyca to port my old number. Is this possible?

No, if you have already activated your new SIM card, you cannot port your old number to Lyca. Your new SIM card has been assigned a Lyca Mobile number, and it cannot be changed to accommodate your old number.
However, you can always buy another Lyca SIM card and port your old number. Head to the Activate SIM page and choose the Transfer My Old Number to Lyca option to initiate the process.