Do we know the earliest we can apply for an extension before our Covid extension expires?
Mine expires on March 31, I would like to get it done in the province I'm at before March 5th. Along with my 90 day deadline on March 9.
TLDR : Answer Summary
You can generally apply for a visa extension 30 days or less before your current visa stamp expires. Since your Covid extension expires on March 31, you can inquire about applying for a new extension when you file your 90-day report on March 9.