Conflicting instructions

Just got my first ever order of tesamorelin from Amble. On the app, doctor’s instructions are to Inject 13 units under the skin at bedtime, 5 days per week, for 4 weeks. But on the pill bottle, instructions say 13 units once a week. Amble is notoriously slow at responding to questions through its message system. Anyone with some insight as to which instructions to follow?