Running Mounjaro myself, similar product. Only need the 5mg dose. Normally you'd just get the 5mg script, which gives four doses. Worked out that grabbing the 10mg pen instead actually costs less overall. Had my doctor update the prescription accordingly. With the 10mg script, I now get eight doses out of it, more upfront cost, sure, but it ends up saving several hundred dollars total. When it's time to dose, instead of running the pen's full rotation, I just do half, exactly 30 clicks for me, so it delivers 5mg instead of the full 10. Hope that's useful, it's a solid chunk of savings.