Now that DS is finally sleeping in bursts of over an hour at a time (only took us 8 months!) we are trying to gently move him into his own room... But unfortunately it's not working well, especially as the nursery is quite noisy at night, with the lift mechanism on one side, a shared hallway on the other, and someone else's bathroom above. We can't swap rooms due to the size of our place, and Ewan the sleep sheep doesn't seem to be enough to combat the unpredictable loud noises, so DS is sometimes waking every 20 mins and we are about to keel over, especially on the weekends when our area keeps pumping until the not-so-wee hours 
Any idea how long it might take him to get used to this? Can we help? Or alternatively can anyone recommend a properly loud white noise / sleep sound device? If we can't get him to sleep in the nursery soon we'll be back to cramming in to our tiny bedroom and not being able to make a peep in bed after 7pm.