Feeding schedule?

My 7 month old has been breastfed (pumped milk or nursing) up until recently, and is now fully transitioned to formula due to my work schedule.

We’ve always fed on demand, and baby never drinks the same amount of milk at a specific time. My question is, should I now be putting her on a schedule? I see so many moms saying “baby eats 7oz at 9am” etc. If that’s what I’m supposed to do, any tips on how to get my girl on a feeding schedule?