Query on A7 and A9 - Employer testimonial n Current employer

[roadrash2k]

Dear Friends,
I recently took up a new job in June 2021 and intend to apply for PR after a gap of 2 years.

Following are my queries
1. Do I need to wait for 6 months in my new job to apply for PR based on below A9?

A9. Current Employer’s letter stating the date of employment, position held, salary per month for the past 6 months with breakdown into basic, overtime and allowance per month. The letter, addressed to the Controller of Immigration, should be dated within 1 month from the date of submission;

2. A7- Do we need to furnish this for all previous employers? Also is there a sample to this testimonial letter?
A7. Testimonials from previous employer(s) stating the nature and duration of employment and the last drawn basic salary (if any);

Regards,
Rajini