Switch to mounjaro?

Hi guys, from Christmas ive stalled. I moved up to 1.7 then 2.4. In 2 months ive lost 3lbs 🤦🏼‍♀️ I just cannot justify the price for this. The higher doses dont seem to work for me. Has anyone switched to mounjaro and stayed on the lower doses (im thinking costwise) and it worked?