Sorting By Month

Hello guys,
Under the Select input of the right side, i Have a CPT(Schedules), the title of the post is Date, in every events tour singe page there’s a specific schedule. my questions is, how can i be able to sort them by date based on the post title. i tried to create a sorting function but i can’t execute it well. maybe you could help me with this.

Thank you so much!

The page I need help with: [log in to see the link]