Using
DAS completely changes any plans I would normally suggest because you will return to the kiosk between Dumbo and Casey Jr. in order to get your return times. Additionally, depending on the advance DAS you get, you can avoid long wait such as for Peter Pan and Alice in Wonderland.
There are just some rides that make sense to do as a set due to the exit of one ride basically being at the entrance of the other. So that would be Dumbo to Casey Jr., Snow White to Pinocchio, Peter Pan to Mr. Toad, and Mad Tea Party to Alice in Wonderland (although I recommend doing Alice with DAS first due to average wait times).
Assuming you arrive early enough, I would recommend going to Dumbo, then Casey Jr. There, you can get DAS for Snow White or Peter Pan. If the return time is close, you can do the Carousel and then do that ride. If the return time is a while away, you can do the Castle Walkthrough and then that ride. After either Snow White + Pinocchio or Peter Pan + Mr. Toad, you can get your DAS for the other one and finish up the attractions in that area before moving on to Alice in Wonderland, Mad Tea Party and Storybook Land. Once you're done with those, you end with It's a Small World (I assume you skip Matterhorn because of the toddler). Ideally, you'd have an advance DAS for Alice in Wonderland starting around 2 hours after you arrive at the park and an advance DAS for It's a Small World starting 3 hours after you arrive so that you can skip those waits and use your regular DAS for Storybook Land or Mad Tea Party, whichever is longer.
This is an untested itinerary though as I don't use DAS.