I'm not sure if you are using the Google Home App or the Nest App, but if you are using the Google Home App, open the app on your phone, You will see an icon (button) called Settings. Tap on that and open settings. At the top, you will see a setting called "Household". Tap on that and you can invite your son by email address. Unfortunately, he will be able to control any other devices that you have added to your "Home" enviroment like lights, thermostats, etc. Once he is added and accepts the invitation, he can open the Google Home app on his phone and see your devices including your cameras.
You can also do it this way...
Open the Google Home app.
- Switch to the home you want to share.
- At the top, tap Add (The big plus sign, upper left +)
- If you don't find "Invite home member," tap Add person to home.
- Enter the name or email address of the person you want to invite to your home, tap Next.
- Review what’s shared when you add someone to your home, tap Next.
- Review the person’s access to your home, tap Send.
- If your Google Family Group isn’t full and the person you’re inviting isn’t already in one, you’ll get the option to invite them to your Google Family Group.
- To invite them, tap Add to Family.
- To skip this step, tap No Thanks.
- Note: You can have up to 6 members in a Google Family Group.
The person you invite will receive an email with instructions.
https://support.google.com/googlenest/answer/9155535?hl=en#zippy=%2Cinvite-members-to-a-home
If you are using the Nest app, it is much the same. Simply open the app, look for the settings icon at the top (a gear image), tap on that, look for "Family", and add a family member.
Hope this helps and good luck!
