Does anyone know whether it's possible to get a stair gate that would fit an opening of 62cm? The smallest I can find is 63 cm. I want to move my toddler into a bed but he insists his door is left open and he would definitely roam in the middle of the night and wouldn't be safe so I want to get a stair gate for his bedroom door which is ridiculously narrow. Any advice would be much appreciated. Thanks