The dip coating of discrete objects presents unique challenges due to transient dynamics and significant topological changes in the liquid film, contrasting with conventional continuous processes that assume effectively infinite immersion depths and steady-state conditions. In this study, we investigate finite immersion depth dip coating as an idealised model for coating discrete objects. Using numerical computations with a phase-field finite element method, we meticulously observe the coating process and delineate it into several distinct stages based on characteristic events. By analysing the liquid movement during these stages, we identify a critical phase that is decisive for the formation of the coating layer. To capture the essence of this critical phase, we develop a simplified model that approximates the flow characteristics at this pivotal moment. This model allows us to predict the volume of the coating layer with great accuracy. We further perform an asymptotic analysis to quantify the coating layer volume in the capillary-dominant regime, revealing a clear relationship between the coating thickness and the governing dimensionless numbers. Our predictions are validated against detailed computational results, showing excellent agreement. The findings offer new insights into the transient behaviors of dip coating of discrete objects and provide a foundation for optimizing coating processes in practical applications.