19 month old DD has been a great sleeper for the last 12 months. She would self settle most of the time and sleep through till 6-7 am. She would also nap happily in her cot in the day. Suddenly around a month ago she decided she hates the cot and would scream when put in bed. We took the side off in case she felt trapped but still no change. She will however fall asleep happier on the floor on a mat or her mattress (on the floor). Can this be a permanent solution? DH is considering removing the cot from her room and letting her sleep on her mattress but I'm not sure! Anyone had a similar experience with their toddler? Thanks!