In order for you to set up Routines in Google Home using Breez, firstly you need to configure the Google Assistant with Breez.

In case you have not configured your Google Home with Breez, follow the link below and continue from here once configured.

Link: Configuring Google Assistant with Breez

If you have already configured your Google Assistant with Breez move on to the instructions mentioned below.

Step 1: Open Google Home app, on the Home Screen, tap on 'Settings'.

Step 2: In settings, tap on 'More settings'.

Step 3: In more settings, tap on 'Assistant'.

Step 4: In assistant, tap on 'Routines'. 

Step 5: You can customize ready made routines or create your own routine. In this case we will proceed and customize an existing routine. Tap on, 'Good morning'

Step 6: In the 'Good morning' routine settings check the Adjust thermostat box and tap on its 'Settings'.

Step 7: Set your desired temperature and tap 'OK'.

Step 8: Tap 'Save. Your Routine has been customized and the set thermostat action will now trigger with the 'Good morning' command.

Note: With this command, If your AC is ON your temperature will change to set temperature and in case the AC is OFF it will turn on at the set temperature.