“Thanks, I’ll try to remember to do that at the end of the month”
Mmm… why leave it to you memory…!
Capture ideas and ’things to do’ when they first crop up!
iOS users – try:
‘Hey Siri, remind me to…. tomorrow/ next Tuesday/at the end of the month’
More info on using Siri with Reminders
Put it in your diary, or notes
Or if you want to try something more robust explore Ayoa or Microsoft Tasks (within Office365)