What should I keep tracking after stopping?

A few things. Weight, regularly, read as a rolling average. Protein, in grams per day, against a target you keep even on busy days. Body composition, so you can get a sense of whether changes come from fat or lean mass, in Phaze this is the Body Composition (Beta) photo estimate, which can also import a DEXA scan. Fasting glucose and A1C, especially if you took the medication for type 2 diabetes or prediabetes, so you can see whether the metabolic picture is holding, worth reviewing with your clinician. And your habit checkboxes, the boring daily binaries for protein, training, sleep, and hydration. Phaze keeps each of these in one place, with Labs & Scans covering eight biomarker categories, so you are not stitching screenshots from five different apps to see the picture.