every baby is different.
my lil girl is turning 3 mths this week.
she stays at my parents' place.
my mum puts her sarong (during the day), playpen or on her bed (at night).
when i bring her back to our house, she'll only nap in the sarong for about 30 mins, does not like the cot and prefers to sleep nxt to me on our bed fm night to dawn. so daddy's gotta sleep on a spare mattress on the floor.