If the air conditioner takes much longer than usual to cool, check the filter, vents, and outdoor unit for blockage

https://blogfreely.net/unlynnihdd/affordable-ac-repair-in-winter-haven-when-to-repair-vs-replace

If the air conditioner takes much longer than usual to cool, check the filter, vents, and outdoor unit for blockage. Persistent delay often means a mechanical issue.