When is the "ideal" time to move toddlers from cot to bed? Are there any tell-tale signs that they are ready? My ds is a good sleeper so I am happy to leave him in his cot but I also don't want to keep him in it for longer than he should be. I've just had a look at the Q&A with GF and she recommends 3 yrs which seems quite old to me - at what age did you introduce beds?