Firstly, I enjoyed reading through the devlog! I've noticed I do very similar notes, but in a notepad, lol.
The track gives such whimsical and magical vibes. It actually reminds me of Kingdom Hearts, but specifically the Alice in Wonderland world (overall, a walk through an enchanted area vibe). I also think the Day 6 track could've also worked in succession to Stroll Through The Garden, with some tweaking done. Thematically, I could see it being a darker tone, perhaps the introduction to the dreaded season of Summer.