Trending @Infosys; Promotion JL2 to JL3

I have joined Infosys in May 2022 and I got promotion to Senior Systems Associate after 1.5 years and it's been an year with SSA, how much experience we need to get promoted to Systems Engineer.

I heard something from my friends we need to get nominated by manager, but my manager asking me when it will open and I don't have any idea on it.