Good morning ? Could you please tell me who transitioned to mixed fee…

Good morning ? Could you please tell me who transitioned to mixed feeding at 5 months? How did you introduce formula? I can't breastfeed because I have to travel frequently for school. I've already started introducing solids. Please recommend someone on SW. I beg you not to write anything like "you can pump milk." We tried pumping, but there was very little milk left.