Visual search - can you directly edit html to change delay?

I'm using the Visual Search:

I downloaded that html file and was able to run that experiment via the browser simply by opening that file, which is great.

However, the current delay between each of the 50 questions is 4 seconds (4000ms). How do I change this, to 2 or 3 seconds?

I'd like to do this by directly editing that html file. Is this possible? It'd save me a lot of time because the html file essentially serves the purpose of what I'm doing. All I need is a smaller delay.

I tried changing a couple of places in the html file but that didn't work.

Thanks.