A question of two parts really... the first being at what age did you start to introduce routine and the second how so, as routine suggests putting baby to bed at certain time etc but SIDS advises that they are in the same room as you until 6 months old.
I have a 4 week old baby (not stressing about routine at all just now but just looking for info/people’s thoughts). We have a next to me crib at the moment. He stays with us downstairs napping/feeding following his lead at the moment and he comes up to bed with me when I go up.