This is how it works. I think if anything the return times will end up being sooner than you’re showing here. Disneyland return times tend to be more immediate, except for the 2-3 highest demand attractions in each park. Return times start moving to 2-3 hours out in the afternoon. The highest demand attractions run out around 5-6pm.
If you check thrill-data.com it has historical data for every day of when return windows were for each attraction throughout the day. Worth studying if you’re interested.
Once you’ve gotten experience using Genie+ in Disneyland for a day, you’ll probably just wing it from there on out. It’s pretty easy to use.