you can check out phonebox. they have really good USA plans. you can get a new number and then forward your PM sim to the phonebox number. the PM sim must be left in Canada or not installed in any device in the USA or the call forwarding will stop if it tries to connect to a network
HI@PBarna if you are in US for 3 months, get local data sim from US
For your PM account, you can suspend it for 3 months to svae some money. But remember to resume service before the 90 days grace period or your account will be closed
@PBarna , US roaming add-ons are only 10 days long, no other option. If you need service for 3 months, it would be cheaper and much more convenient to buy something directly from a US carrier.