const disabledDuration = 5000; //disabled duration in milliseconds\nconst firstQuestionName = \"Q1\"; //The logic will get set up when the first question loads\n\n\naddOnQuestionLoadHandler(firstQuestionName, (element) => {\n  //disable the next button for the first page load\n  disableNextButton();  \n\n  //add an event listener to the next button click to disable for future page loads\n  document.querySelector('.next-button').addEventListener('click', () => {\n    //wait for validation to run, if there are no errors that means a new page has loaded so disable the next button again\n    setTimeout(() => {\n      if(!document.querySelector('.error')){\n        disableNextButton();  \n      }\n    }, 300);\n  });\n});\n\nfunction disableNextButton(){\n  document.querySelector('.next-button').disabled = true;\n\n  //enable the next button after the time specified in the disabledDuration variable\n  setTimeout(()=> {\n    document.querySelector('.next-button').disabled = false;\n  }, disabledDuration);\n}

A couple of notes about this code:

In Discover we don't have a \"page load\" event yet (we do have plans to add it), so this code runs simply on next button clicks. It sets up the logic on when the event for the first question loading fires and then every time you click next it checks the page for errors, if there are no errors it assumes the next page has loaded and disables the next button again.
You can change the amount of time the button will be disabled in the first line. It's defined in milliseconds, so this example will disable the next button for 5 seconds.
You will need to specify the name of your first question on line 2 inside the quotes. Like I said, there is currently no event for generic page loads, so we have to choose a specific question's load event to set up the logic.

You should be able to paste this into the Custom JavaScript area under settings, change the first two lines and have it work. Hopefully this is helpful!

Delayed Next button