The absence management part within my CommCare application

Hello Mrs. and Mr.,

I am really planning to address the absence management part within my CommCare application. Specifically: The monitoring for malnutrition spans 12 weeks, and during these follow-up visits, it's possible for the patient to miss one or more visits. I intend to rely on the variable lastVisitDate, which represents the date of the last visit, to handle this scenario, along with the today() function. The duration between each visit is 7 days, meaning the interval between each visit is 7 days. I am keen on tracking the number of spontaneous absences and the number of consecutive absences. I truly need your assistance to handle this case. Thank you very much for your understanding.