Pass code to unlock my iPhone 11

Can I use the iPad to reboot my iPhone 11?

No, thats is not possible.

To unlock your iPhone, follow the steps described in the Apple article:

(< iOS 15.2) ->: If you forgot your iPhone passcode

If you forgot your iPhone passcode - Apple Support

(iOS 15.2 and newer) -> If you see an iPhone or iPad unavailable message or Security Lockout screen

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

No, you will have to reset the iPhone 11 and then set it up again.

How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support

It might be a good idea to write down your new passcode and keep it in a safe place, even if you feel that you will never forget it.