When he's old enough as he's currently sleeping separately from us

It’s up to you when you feel comfortable with it

Not using since Iam co sleeping with my little one

I don't think you need to be prescriptive on this

I don’t believe there is a fix timing for that

baby sleeps with us. so never used it.

I used it till he was 3 years old

When I feel the baby is ready

When my baby turns 1 year old

Never.. its still there