...Also is this online as they work during the week?...
Where I live an online course is the
only option. I'm doing one next week.
But "online" doesn't mean you can just log into it and do it at any time you choose.
They're proper courses with other participants hosted via Zoom that you have to book in advance. I may be wrong, but I suspect they may only be scheduled Monday to Friday, 9 to 5.
You'll have to wait to see what you're offered after your brother has identified you, and you've received and returned your own s172 request.
You need to have completed the course within 4 months of the original offence. (Or that's the case round here anyway...)