I want ds2 to start preschool in September, when he will be 20 months old. I suspect he may be clingy and ds1 didn't start preschool until he was 2.5 so I have no experience of sending such a young child. It is for 2 1/2 hours per morning, and whatever I choose will be for a whole year (-so, until he is 2.8 years old). Is it best for him to go for just 1 morning for a gradual transition in his first year or 2 so that it is more regular from the beginning?