4 months and moving into his room

My back is 14 weeks at the moment but quickly growing out of his Moses basket so we are thinking he's going to have to go into his own bedroom next month. We have a monitor with a sensor mat. I just wish we bought a video monitor. I'm worried about him going into his room because all night I lean over and put his dummy back in and I obviously don't want to be getting up constantly to do that. Also he sleeps in his cot in the day and when my husband checked in him the other day he had managed to get his leg between the bars!!! I will clear his cot of all his teddies etc beefier he goes in but I'm just worried he will get himself into a pickle and I won't know as il be asleep! Anyone got any advice to make this transition easier???