This step by step tutorial explains how you can disable or temporarily turn off email notifications in Google Forms.
Step 1: Open the Google Form, go to the Addons menu and choose Email Notifications.
2. Choose Troubleshooting / Tech support menu.
Step 3: Click Disable Notifications and you’ll see a popup confirming that the notifications have been turned off.
If you would you like to resume/restart email notifications for forms, choose the restart option in the same screen.