Sleeping through the night...

Our little girl has started sleeping through the night the last few nights. She has dwindled down to just one feeding between midnight and 2 am. But the last 2 nights she's slept from 7-8pm- 4-5am. We normally give her 4 ounces before bed an if she wakes in the night she gets 3 ounces and when he wakes between 5-6 another 3 oz and then at 8am she gets 4 ounces for "breakfast". Should I up her morning bottle since she is missing a bottle at night? My husband was wanting to give her 5 oz when she sleeps through the night as a reward.