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Check task scheduler (control panel>admin tools) to see it is running from there. If it is disable the task. Also check C:\Windows\Tasks to see if adobe has a task in there, if so delete it.
"Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and changes to improve functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements."
It has become near impossible to turn off any AV installed in W10 or 11. I suggest to remove sophos and go back to defender. then read this on how to remove Defender>>>superuser.com/a/1590129/40928