Sleep advice please!

So my little one is not quite 6 weeks old. She wakes every 2 hours to eat. when it gets to 04:30am she is impossible to settle again! She will be awake until her next feed is due; not crying exactly but making a groaning noise, fidgeting around and just generally unsettled.

We’ve increased her feeds to try to get her to last longer than two hours but she’s a “little and often” kind of girl!

Any tips to break that 04:30 witching hour? The broken sleep is killing me 💤💤💤