Toddler bed

Last night was the first time my 2 year old son slept in his crib with the toddler rail. He went to bed completely fine and stayed there all night. When he woke up in the morning he popped

Right up and went to the his bedroom door. I was watching on the baby monitor since I was already up with the 6week old. He was upset since he struggles opening up the door. I guess I’m asking for advice/ input.. should I leave his door open or keep it closed? I’m worried what he would do in the rest of the house in the morning. What do other mommas do with their toddlers?