The ecological importance of SOM has driven ongoing efforts to develop and refine SOM models that provide deeper insights into its processes at the molecular scale. In this paper, we introduced an improved parametrization scheme for coarse-grained SOM models, which extends our previous work . This new approach enables direct conversion of atomistic VSOMM2 models to their coarse-grained counterparts, which eliminates the need for atomistic MD simulations. In addition, it provides the coarse-grained topology files in a more efficient and user-friendly manner.