We have a cot with one side removed (because I can't lift him in asleep as I'm too short) pressed up against our bed. Our 10mo starts out in there and then moves into our bed for feeding at night.
The problem is that there is no real barrier. He once woke up, roamed around the bed silently (without triggering the monitor) and fell on the floor 😪. Now I go to bed when he goes to bed, read in bed or I'm super vigilant and hovering near the bedroom. I have the same problem during naps. It's just a shame that I can't spend the few hours when he's asleep doing something else.
How do other cosleepers keep their babies from rolling off without being in bed with them all the time? I wondered if bed guards would help - I think they might delay him but not stop him completely.