Cannot advise you on why it’s good to sleep alone. Probably baby will be more independent and can self soothe to sleep on their own, parents can sleep more. I have been cosleeping with baby on bed since day 1 as I feel that I can look over her and I feel safer since I am right beside her and I can watch her. (I don’t like the idea of maybe she needs help and I fail to respond cause I’m not on the cctv or anything.) From 10mo onwards, I just let her roll around the bed and she will fall asleep herself. And also, how long will she still be willing to sleep with me right 😂? So I would say, personal preference. No right no wrong 😊.
Hello mommy if there is a space crunch can always make the baby sleep in crib or bassinet in your master room. If not, can place a baby bed (attached image for reference) on your cot and can co-sleep. This will not disturb your baby at the same time baby will be on your reach in case of any need.