A few tips to help with scheduling for shows, parades and fireworks when planning a trip in advance

Many of the shows aren't scheduled until a few weeks in advance, so you will likely find that there are many more than are being displayed right now. I would assume that most of the shows happening now will continue into September, with the exception of possibly the Pixar-related things Disneyland started for the summer. Even those may continue, but we don't know yet. The closest we can get right now is by using the equivalent day from last year. You can see for yourself what was running last year by going to https://touringplans.com/disneyland/showtimes for Disneyland or https://touringplans.com/disney-california-adventure/showtimes for California Adventure and changing the date using the "Jump to" boxes on the lower left. The parades and fireworks may not be the same, but many of the shows will be.

The best way to get a plan to conform to your dates is to modify an existing Touring Plan. To do that, find one that is close to what you want and click the Copy button near the top. It will then copy it to your personalized plans (https://touringplans.com/disneyland-resort/touring-plans/personalized) where you can change the date to match yours, add or subtract attractions, and Optimize it to find the most efficient plan. Looking at your account it looks like you've began trying out the personalized plans.