Interesting so far, I do like the infection idea to make him incontinent, and just let the need to go back to his foalhood to come back to him. The story flows naturally and isn't too convoluted enough to detach from it. I think the quality of the writing is also much better compared to before, good job on that.

I think the other story with PBB I felt the expectation with the mare of the last story and the drastic change in tone and really forced introspection worked against the story and make too many contradictions.

This chapter does well to move the story along. Soarin basically got 'permission' to wear diapers and his mom, not staying in Cloudsdale, casually went into Ponyville to get pamps for her lil' Clipper.

I wonder if Soarin will now sleep better knowing he has less to worry about? It's really amazing when your mind can have some serenity from the chaos within.

Also, as an aside, I've noticed 3:00 to be a common hour to wake up when there are things afoot. I actually talked to my therapist about it and learned how this time is common for those with anxiety and stress to wake up at during the night. So, whether on purpose or not, having Soarin waking up at 3:00 AM makes sense as it is typical for those in his current situation to find themselves being abruptly worked out of slumber.