We also has a bedside cot but due to bottle feeding and a baby that almost instantly slept for 6 hours at a time he stayed in there until 7months then moved to a full cot and now a bottom bunk with bed guard. The first was a different story my oh was a single mum and he shared the bed until about a year when he got his own cot/bed in a new house but again no issues and he is a top bunk lad at 4.