To summarize, in this work, we first discuss how the decay of the orbital rotation matrix can be leveraged to reduce the scaling of the ERI transformation process required to generate the fragment Hamiltonian, while keeping the truncation error below a certain threshold. We then propose a method for calculating DMET-CCSD(T) energy based on the CCSD(T) density. Similar to conventional CCSD(T) calculations, this approach allows for the accurate determination of DMET-CCSD(T) energy by calculating the (T) density after the calculation has converged, avoiding the need to iterate through the more computationally expensive CCSD(T) solver at each step. Finally, we benchmark the quality of energies obtained via SCF-DF-DMET-CCSD(T) using different localization schemes. We find that, similar to the case with CCSD, Löwdin localization successfully recovers almost all (approximately 99.9%) of the CCSD(T) correlation energy and provides reliable relative energies between different water cluster isomers. Potential future work includes applying this truncation approach in covalently bonded systems, although in this case a more rigorous embedding approach such as Bootstrap Embedding (BE) is required to recover a sufficient amount (≥ 99.5%) of correlation energy due to much stronger interaction between the fragments. In this case, specific schemes should be devised to avoid very memoryexpensive (T) density calculations in the fragments. Additionally, incorporating density-based basis-set corrections (DBBSC) could be a valuable approach to reduce basis-set errors in total energy calculations and a linear-scaling HF solver that uses the RIJCOSX approximation can be coupled with it to recover Complete Basis Set (CBS) energies for DMET in very large systems.