Clarifications on dropbox appointment and interview waiver

Myself and my wife submitted application for renewing our B1/B2 visa , which was issued from US consulate Dubai and expired in 2020 March, While submitting the visa applications we got eligibility for interview waiver. We got appointment at Chennai VAC on Aug.16th 2022. Can we submit our documents to drop box center at Kochi on Aug. 16th? or we have to take another appointment for submitting documents to Kochi center?