Baby suddenly not settling into long sleep

[SL80]

Hi all,

My little girl is now 7 months and since about 2 months we have been fortunate she typically would sleep from 8.30 through till 6am with only the occassional time waking in the early hours and need a little comforting.

In the past week or so she has started to go to sleep as normal around 8.30pm but is waking around 10pm and then again before midnight and the only way we can get baby to settle is to lie her on the bed next to Mummy and she settles and sleeps through.

We haven't changed any routine or food so not sure if this is just a phase around 7 months and if anyone else has experienced this is there any tips to get Baby back into the sleep cycle?

Much appreciated