Erroneous Sussiptions

So my 3-year-old son Charlie is trying out the word "suspect" but he chooses the very alt pronunciation "sussept" as in "I sussept I want to watch a video". Here was our conversation in the car yesterday:

HIM: Dad, I sussept that butterflies have small wings and bees have big wings.
ME: Well, I think it's the other way around. Bees have very short little wings and butterflies have really big long wings.
HIM: No, I sussept bees have long wings.
ME: You know who has really long wings? Dragonflies.
HIM: I sussept dragons turn into dragonflies. Dragons turn into dragonflies, Dad.
ME: Oh. Does butter turn into butterflies?
HIM: No. That's silly.