DS 19mo has been having issues with his sleep since we got back from a holiday nearly a month ago. Last week he was poorly and this actually helped solve the issue, ie long night wakings and taking a long time to fall asleep, so I have had 5 good nights but last night things got bad again and I don't know what to do. At bedtime last night he went happily to bed but before I was even downstairs he was screaming for me and it took 40mins to settle him, tonight same thing except it has taken me 1hr 10mins to settle him and I was in his room the whole time until he fell asleep and his door is wide open as I couldn't shut it as everytime I tried he woke and started crying again. The problem with that is we have a cat and I don't want him getting in with ds in the night. I am really not sure what is causing this so I don't know what to do, the only thing I can think of is that he has developed an aversion of going into a room without the light on and that maybe it is the total darkness in his room that is upsetting him, but he goes to sleep perfectly at naptime so I don't know if it could be this? Any help appreciated Niki x