The Redwing is still being seen as of yesterday (March 15). There are two sources you can check for updates, one of which is the BC Rare Bird Alert blog on the Vancouver Island page:
The other is eBird - I am often updating the Vancouver Island page on the blog from sightings submitted there. You can find recent sightings of the Redwing by going to "Explore Data" and "Alerts". From there you can either search for "British Columbia" and see the province-wide rarities or "Capital" to see Victoria area rarities.
I don't anticipate the Redwing going anywhere until around mid-April, so hopefully it cooperates for you!