If he doesn't come by I will send a text just saying "I have to leave at 5:30 tomorrow, can you be here by then?" or should i word it differently?
That works.
Other option:
"H, I am sorry this is last minute, but something important came up tomorrow and I would like to know if you can be at the house by 5:30pm? Let me know if this works for you otherwise I will make arrangements with Mom. Thanks! Kech"
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712