My little girl is 20 months and about a month ago she decided she wouldn’t sleep in the cot anymore so she’s in a big girl bed now with a bed guard how ever the past two week SHE WILL NOT SLEEP I don’t know what more I can do and I’m exhausted I’ve tried letting her cry it out.. I’ve tried reassuring her by going in every ten mins I’ve tried books I’ve tried everything please help I don’t know what else to do and since this lock down it’s got even worse because she is so clingy with me all the time