My DS will be four in December. He's a good sleeper and up until age 2.5 went down happily in the cot himself, playing a bit before nodding off.
At that stage he became quite unwell and we spent a fair amount of time in hospital over the next nine months. A time of a lot of upheaval for all of us. He's doing much better now and we don't need to spend any nights in hospital, just occasional (ie two monthly) visits.
During the illness I spent nights in hospital with him and he got used to having someone while he fell asleep. We've kept up this habit of someone staying as it hadn't been a priority for us to fix. But now that life is more normal and with a sibling coming in the new year, we'd like to gently start leaving him to fall asleep alone.
Any ideas for how to start? He's in a big bed and generally falls asleep within ten to fifteen minutes.