2.5 isn’t really a treatment dose, it’s the titration step. it’s there to let your gut adjust before you climb, not to drive loss. so three shots in with nothing on the scale isn’t the alarm most people read it as. before anyone touches the dose, this is the order i’d actually check, because changing the variable too early means you stop knowing what you’re measuring. first, the label. BUD, concentration, and the date it was reconstituted. ninety percent of “is this working” questions resolve once i see the label info. then storage. tirz is forgiving, you can have a warm week and mostly be fine, so this is less likely to be your culprit than with reta. but a vial that lived in a kit bag through repeated temp swings is still worth ruling out. then prep consistency. are you drawing the same units each time, same syringe, same technique. variance there shows up as “some weeks feel stronger” and it’s a measurement problem, not a drug problem. then the actual timeline. four to six weeks minimum at a real dose before you know anything, and 2.5 isn’t a real dose yet. the scale is the wrong primary signal this early anyway. watch appetite and satiety, that’s what shifts first. the thing i’d push people toward is logging it instead of eyeballing it. dose, date, what you ate, hunger 1-10. i keep mine in a tracker called CareClinic mostly because i can export the whole log as a pdf and hand it to the prescriber instead of trying to remember six weeks of pattern in a five minute appt. consistency over tweaking. that’s where most of the real-world delta lives. fwiw.