Any babies in cots yet?

My boy is 12 weeks today and we are finally moving him to his own cot.

In the same room as us but he’s grew out his noses basket now.

Does anyone have a routine we usually let him fall asleep downstairs with us and take him up when we go to bed.

I’m thinking of giving him his last bottle and putting him upstairs in his cot by himself with the monitor on and let him fall asleep by himself. Or is it better to let him still fall asleep downstairs with us and then take him up like we have been doing?