Thanks.The deadline for submission was December 6 so you should be fine.
https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/family-sponsorship/sponsor-parents-grandparents/apply.html
Yeah I saw that too and it was quite confusing. They said no later than 60 days from the date of invitation but also below they mentioned Dec 6th is the last date. Strange!