Formula feeding and cluster feeding

Li

Baby is one month old today and she had just had 3 hours of cluster feeding. She is on formula milk and drank 3 x 4oz bottles in a 3 hour period.

I offered her a dummy and boob, she didn’t want them. I made sure her bum was dry and walked round with her but she just kept showing signs of hunger... Is it normal to eat that much in such a short space of time??