how to say properly a changing  change in of schedule!

Ciao, I've edit my schedule for Sunday the 6th and 13rdth of July. I usually work on weekends, that's why you couldn't book. Anyway what time works for you? We can try to figure out and set up a new schedule! Let's try! Thank you for your message.Ciao Ciao

Does it work? Have I made many mistakes? Thanks for helping!

how to say properly properly say a changing of  change in schedule! 

Ciao, I've edited my schedule for Sunday, the 6th and the 13th rd of July.  I usually work on weekends. that's why you couldn't book.  Anyway, what time works for you? We can try to figure it* out and set up a schedule! Let's try! Thank you for your message. Ciao Ciao

Does it work? Have I made many mistakes? Thanks for helping!

***  I wasn't sure what you want to work out, the booking, the schedule, or what, so I added the word "it"   Hope this helps.