Exclusive pumping and feeding questions

Cynthia

My little girl is eating 3-3.25 Oz every 2 hours during the day, goes to bed between 9:30-10p and sleeps til 6:30-7a. How do i get her feedings spread out further during the day? My body is producing more milk for pumping (around 3.5oz) at around the 3hour mark, and because she eats every 2 hours we are not in sync and I'm having to supplement with already expressed milk from night pump sessions. And I've tried giving her 3.5oz to see if I can get her to go longer but it causes spit ups...