How to get 2 babies to sleep?!

[pinkdot]

Hello!
I have 2 little ones DD is 2 years old and DS is nearly 7 months! Since DS has been here, DD has turned into an incredibly light sleeper and now wakes at least once in the night. DS is still in my room, I can’t seem to get him to settle in his room for more than 20 minutes. I’m BF and he just wants to feed and cuddle (which I love) allllllllll night. I’ve tried to settle him in the day in his new room but I’m too scared to do it overnight now that DD wakes to the slightest creek in the floorboard.
Any suggestions? I just lost all the routine built up in the past 7 months and I don’t know what to do anymore?
Thank you for any welcomed advice x

More details needed. Is your daughter in cot/bed. When are they waking up? What happens when they wake up, etc?

She’s in a cot, and it varies. Tonight it was 10.30 but she had a night terror so just had a cuddle. She’s been waking asking for milk usually between 11pm and 2am. I always go in to her and try and settle her before getting the milk but if she’s thirsty I’ve been giving her more.
Before my son was here she would have bath at 6 and a bottle and we would read books and bed at 7 and she would sleep through until 7.
I now have to put her in bed and then give her the milk otherwise she cries and won’t settle

Are you on your own or do you have a partner?

If you love cosleeping with the little one then you can just keep doing that.

We had lots of sleep problems when my boy was 2.5 and my baby was 4 months for a good few months. I think you need to concentrate on the 2 year old. Personally I wouldn't be offering milk and I would try and be strict. Try things like a night light or lullabies to help her back to sleep. I would go down the controlled crying route if I had to, but appreciate that's not an option for all.