I've got a 6 month yo and a 2.5 year old. Once they are finally both asleep around 8pm I feel a bit nervous popping downstairs, as if my older one wakes up and wonders out his room, he'll see the baby in his cot and climb in. He does this when we're all awake, he can climb into the cot very easily. Any tips on how to stop it? Am I worrying too much? Thanks!