If I have not file the live-in self certify form for the year 2017, can still exclude my IHSS income from filing?

[Critter]

What Do I Do For Wages Paid Before My Self-Certification Form Is Received? 
Your W-2 Form for past year wages paid prior to 2017, or for 2017 wages paid prior to the receipt and processing of your Self-Certification form will not be amended. Providers are encouraged to consult with a tax advisor or contact the IRS directly with questions.

http://www.cdss.ca.gov/inforesources/IHSS/Live-in-provider-self-certification