Methodology for Graph Database project

Hey everyone, recently I am working on my Final Year Project regarding Fraud Detection using Graph Database. I will have to build a web application using the GRAND stack. I am curious about the methodology that I should choose for this kind of project.

May I ask the opinions on which methodology should I choose and how do I divide the phases in this project so I can represent it in my Gantt Chart.

Thank you in advance,
Afiq.