breast feeding to bottle.

Kim • From UK 🇬🇧 relationship since 2010 🎉🔑🌹👫 want a big family currently 👧👦🏼👶🤰👨‍👩‍👧‍👧
So I made the most difficult decision of my life yesterday, and decided it was best to formula feed from breast. 
My LOs routine on breast.
. Morning cluster feed from 9am-11am 
Sleep till 2/3
Clister feed from 3-6
Average then st three hours between feeds 
As of yesterday I switched to formula, she ate 
8 oz in the first go 
Now it's two to four of every two hours? Anyway of elongating this back to three to four hours?? 
Anyone had a similar issue...? Is it normal? Thanks