GO online to CIC webiste use ur UCI Client id and apply for wp extension (an extensin is deemed as new)
attach pnp letter as proof along with necessary docs ( u will be asked to provide them accordingly) once u receive your wp , apply to cpp ottawa only if u need to travel outside canada. if u have ur visa valid or u have no plans to travel outside canada. you can remain in canada for the duration of stay as per ur new wp.
fyi,
if u have a USA Visa and plan to travel to usa, u can do do without having to renew ur canadaian visa . just wp is sufficient
good luck