Ashy moved into a big bed just before she was 18 months cause she climed out of the cot!
Her uncle owns his own bed making business and made her a beautiful four poster single bed which will last her for years and years. We got one of the side rails from
K-Mart and that did the job perfectly until she was about 3.
I used to lay in bed with her for 5 - 10 mins til she fell asleep when she first moved into the big bed but she was fine after that