You can cancel the request if you removed the security info yourself.

We can't expedite the 30-day process unless you cancel the request. Cancel the request to remove security info If you removed this security, you might have the option to cancel the request. These notifications are sent to alert you that changes were made to your security info. We'll send notifications during the 30-days to the original security info, which could be a phone number or email address. While we understand this 30-day period might be frustrating, this is done to protect and alert you in case the security info was removed by someone who had unauthorized access to your account. When all security info is removed from a Microsoft account, the account is put into a restricted state for 30-days.

What you can and can't do during the pending request See Microsoft account security info and verification codes for more information. Tip: Security info is any alternate contact info such as an email or phone number that you added for account verification purposes.

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