Need suggestion for preparing for L1B individual

Hi Everybody,

I have been recently rejected of L1B blanket visa after VO interview applied from Chennai.
My company is now moving with individual application and the attorney assigned has given assurance that: “Consular interview will primarily focus on verifying your identity and the validity of the approved petition, rather than re-examining the specialized knowledge criteria in detail. In other words, once your petition is approved by USCIS, the consular officer generally will not revisit the underlying eligibility (your specialized knowledge) but will instead confirm your identity and ensure the petition is valid”

But I don’t want to take any chances and hence I am planning to take help from visa consultancy services primarily focusing on mock interviews and DS 160 filling. Please give suggestions as what should be my plan to increase chances of visa approval.

Thanks