Hi, my 2 are 5 months, but 12 weeks corrected. I put them to sleep in their bedroom during the day. Their room is VERY bright cos we have no curtains up at the windows yet. I also have a lively 2.5 year old toddler.
The babies do manage to sleep through him screaming, and running around. I have found that asking him to be quiet makes him worse. I try making a game of it. About 10 mins before the babies go to bed, I start talking to him in whispers, he whispers back! Then I get a favourite toy out - usually his trains, and when I come back down we play with that.
HTH,