I sort all life admin for DC. Their dad can't/won't/will forget to do it, even if prompted. I stupidly asked him to do one thing as it coincided with his contact. Had a week's notice and it's not done, of course. Same thing with any events involving DC, always forgets.
Fed up of "I forgot" or "I'll try". I've tried message reminders, a shared diary app, parenting apps. They don't get looked at, so it's been a waste of time uploading anything to them.
Sorry for the rant. AIBU to say: please, for the love of my sanity, find a way to get organised? Any other stock phrases would be greatly appreciated!