Hope you keep making stories and make a sequel, or just add more chapters to this story. You ended it before it got good, and it was knocking it out of the park.
I mean, you have two weeks of adventures in dresses, plugs, and diapers with Timmy and the other sissy bedwetters. Love to hear how Timmy and the others have to bear through the spankings, enemas, scoldings, and more. Plus, it seems like Timmy might be used as a model at times for upcoming caregivers to practice on, and those curious about how they treat the sissy bedwetters to watch like animals in the zoo. Plus, what happens when his mom picks him up after the two weeks... If she doesn't extend his time there. Especially after a visit. It would be cute to see how she reacts to Timmy as a cute sissy baby, as though she did pick the sissy option. I doubt she was given the full details on the differences, and maybe thought they would be more gentle towards him, like a toddler, for bedwetting over someone his actual age.
Though I bet she would find it fits him better, especially after getting some pointers on how to give him his enema and plug him up when he is "fussy and whiny" after a spanking or to remind him of his place. It's funny to see him glad to be going home after two weeks, for his mom to visit him, to tell him to stay all summer, and to treat it like summer camp. Plus, once he gets back and is still in diapers, he will find his room been changed into something more appropriate for him after his stay at the institute.