Can I downgrade to Windows 10 at this point in time?

You can downgrade back to Windows 10 if it is more productive for you and then enroll into Extended Security Updates. It is free for 1 year. 

https://learn.microsoft.com/en-us/answers/questions/2337049/downgrade-from-windows-11-to-windows-10-article

https://learn.microsoft.com/en-us/answers/questions/5489827/how-to-enroll-windows-10-in-extended-security-upda

But once Extended Support is over, you need to upgrade back to Windows 11.