Absolutely!
I have an audio baby monitor just in case even though they’re right next door and a camera so I can’t check in every now and again x
Yes but I normally have it on silent as I can hear everything but I like to see what he's up to and put the sound on when I go downstairs for the evening
Yes just so you can see what he's doing, e.g. sometimes my baby will make a sound but put himself back to sleep, other times he's stood in his cot waiting for me