May I further ask if there’s a practical model for evaluation planning? It would be great if we could find a framework to guide us to develop an evaluation plan?

You are always welcome.

Sounds great! Thank you very much for the information.

You may refer to the conceptual model called Evaluation Planning Incorporating Context (EPIC), which was developed by Holdern and Zimmerman (2009) to provide a plan for addressing issues in the pre-implementation phase of program evaluation.