I want to share my work outlook calendar with my husband. He uses gmail and has an android phone. We have tried sharing (I add his gmail) and using the .ics file by publishing my calendar, but it doesn’t seem to automatically update. Is there a way to sync my calendar to his gmail so it automatically updates when I change my outlook calendar? Or other alternative ways to share? Installing the outlook app and logging in on his phone is not an option. Thank you in advance for any ideas!