formula and night time nursing

Corinne
My nips are still wrecked after 10.5 months and I am over it. Anyhow, he will take formula so I am trying to replace some daytime nursing with formula. If he was nursing only he would nurse:
5 am
(Maybe 7 am)
11 am
4 pm
7 pm
I'm hoping to keep the early am and bedtime nursings.
Just give him two formula bottles at 11 and 4? He will literally ever only take 4 oz. he eats 19 tons of table food also :) 
Does anyone do this type of thing?