Here is how to count your points https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/express-entry/who-can-apply/federal-skilled-workers.html
You have 60 days to apply, just wait and apply, most like it will work.
Although you must meet the requirements both at the time of invitation and application.
Yup, everywhere. You need to indicate where you were physically while studying or working. Or else you end up with lots of discrepancies.
You can attach a letter of explanation that it was a remote work and distance studies.
Just attach a blank document or cite:
As of October 1, 2023, you no longer need to get an upfront medical examination before you submit your application for permanent residence through Express Entry...