Site Maintenance Schedule

Regarding downtime I'll need to put site under maintenance atleast for 2 hours to make user will not face any critical issue when updation continues.
I'll start update at 5:30 am and till 7:30 site will be in maintenance mode.
Correct above sentence

To ensure users do not encounter any critical issues during the update process, the site will be placed under maintenance for at least two hours. The update will begin at 5:30 AM, and the site will remain in maintenance mode until 7:30 AM.

Yes I'll send again a message before start of the work and after end of work
Correct above sentence

Yes, I will send another message before starting the work and after completing it.

I'll update you Regarding alignment in coming week Wednesday.
Correct above

I will update you regarding the alignment next Wednesday.