Help!! Unsettled 7 1/2 month old twins

[stayday]

My 7 1/2 month old twin girls are very unsettled at night. They each wake on average around 6 x per night. Once I pop their dummy back in they go straight back to sleep. There is no pattern to their waking it could start at 11pm or 3am.
At the moment they have 5 x bottles (1200ml+) and 3 x solids every 24 hours so I don't think it is hunger. Their last feed is at around 9pm. They each sleep in their own cot in a sleeping bag and don't appear to be too hot or cold. They also sleep in our room next to our bed with a small night light.
I can't think of anything else I could do but this sleep deprivation is driving me batty.
Any ideas or tips would be greatly appreciated.

[Lock and Lu]

Is it a wonder week? I find my DS wakes more at night during wonder weeks. Or maybe teething?

I had to move my DD out of our room at 4 months because she'd wake up every time we made a sound. Could it be time to move them to their own room?

I hope for you that it's just a phase that will end soon. Getting up that often is exhausting!