Increasing Time Dilation over time

Hello, I want my game to get faster as the game goes on, and I believe I’m supposed to use time dilation.

However I’m not sure how to go about this.

How can I, for example, increase the rate of the game (which is at 1) by 0.1 every 5 minutes till the game speed hits 1.8

Attaching my blueprint, will really appreciate the help