Hi Malcolm, I am Paulo and I'd like to help.
You can use the Task Scheduler to set a delay on startup programs
https://windowsloop.com/delay-startup-programs-...
Or use third-party apps
https://www.thewindowsclub.com/set-delay-time-s...
(Disclaimer: These are non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.)