Quick and simple way to apply Oracle RU patches in Data Guard

Oracle 19c in Linux RHEL7. 

Following procedure is the quick and simple way to apply Oracle RU patches in Data Guard

1. Shutdown Primary 

2. Shutdown Standby 

3. Apply patch binary on Standby (opatch apply) 

4. Apply patch binary on Primary (opatch apply) 

(3 & 4 will be run in the same time)

5. Run datapatch on Primary 

6. Startup Standby in recovery mode 

7. Monitor the redo apply from Primary to Standby 

Is this good to go? No need to consider downtime, but want to be sure it won't cause any issues.

Thanks in advance for any comments.