Hey, just start timing from m1 since as you said tutorial isn't multiplayer, if you have any more questions in the future the discord server is a good place to ask them, especially if you need them answered quickly. https://discord.gg/uumBt28krf

Playing on xbox is fine and so is using the console companion app. That how i stream if i need to use livesplit. Also like Arlan Kels said make sure to select xbox as your platform