Trying baby on food

I know the doctor is the best person to ask and we have an appointment on Tuesday, but I was just wanting some other opinions until then. My 4 month old used to sleep through the night and have really good day time naps but she's sleeping worse through the day and eating more and she's waking up in the middle of the night just to eat so she's starting to get hungry. I breastfeed at night so she definitely gets as much as she needs it just doesn't seem to be holding her like it used to. Should I trying giving her a bottle at night until the appt to see if that helps get her to sleep longer? I know formula typically holds longer.