Hello Hai
Screen1 is the 'King' of the Screens, so that should be your Home Screen.
You can copy-paste the components of Screen1 onto a new screen and copy-paste the components from Screen Home to Screen1 (thus making Screen1 Home). All component related blocks will move at the same time, but blocks that are not component related will have to be transferred via the Backpack.
Alternatively, when Screen1 is first displayed, you could set all of it's components to visible = false and immediately open Screen Home. Depending on how 'heavy' Screen1 is, the User will probably see it momentarily.