So I haven't been on here in a veeery long time but I'm desperate. 3.5yr old DS has discovered how to open the stairgate and runs downstairs after being put to bed. Doesn't matter how repeatedly we put him back (which is doing my knees in) into his room, he'll just run past down the stairs. Any attempt at ignoring starts attention seeking behaviour (headbutting, hitting) and screaming tantrums. Today's screaming revolves around his pyjamas not fitting apparently. [bangs head against wall] Where has my happy-to-go-to-bed child gone??? Help?