Just-in-Time Adaptive Interventions (JITAIs) are envisioned to harness rich data on users' contexts. However, many JITAIs fall short in leveraging the value of while sculpting interventions. Investigating literature reveals a lack user-centered design (UCD) methods designing JITAIs. Our case study applying UCD process revealed that even without deploying JITAI, could uncover user interactions i...