Hi, a warm welcome to the site. It's possible that an optional L3 unit for safeguarding would bring your qualification in line with the expectations of employers, who'll be looking for practitioner's who are comfortable and confident protecting children or be a funding requirement of your local authority.
Your level 2 handbook will have good reading to start with -
TDA 2.2 sample chapter from Collins.co.uk
To expand for level 3 look for information in the unit CYP 3.3. Search inside the preview on amazon.co.uk for
safeguard the well-being page 109+
Please feel free to ask questions about specific criteria.
Best wishes xx