Help 😖

My daughter just turned 3 months old (13 weeks), she is my first child so I’m new to everything. She had been getting into a fairly good routine, she would have her last bottle by 9pm at the latest and would wake up at 2am, 5am, and 7am for ten minutes just to eat and go back to sleep. But this last week she’s been eating around 8/9ish but then eating again at 10:30/11:30pm, 1/2am, 3am, 5am, and 6:30/7am. Is this sleep regression? Her daily intake has not changed, so she is just eating smaller amounts more often I think. She typically will eat between 25 and 30oz per day and will take between 2 and 4.5oz each feeding. There isn’t really any pattern to her feeding.

Any advice on getting her to to feed more on a schedule or sleep longer stretches at night?

Thanks!