A free mod for Fallout 4, by Jonx0r.

In this app, you can set your desired level as a starting point for the Delayed Launch Controller. This allows you to use the main quest of your game as a start condition. 

This is a handy mod that allows you to keep track of your progress on the main quest. 

This app is also useful for those who want to start the Delayed Launch Controller immediately. If you want to do that, you can remove the “Not until you’re ready”: delay from the start of the game. 

The other option is to set a minimum level for the Delayed Launch Controller.