I have a side car arrangement for my nearly-one year old DS, and until recently have been very paranoid about duvets etc, but he likes to cuddle up to us and now that he's almost one, I was wondering when it's safe to buy him his own duvet for his cot and let him under ours when we come to bed? Googling doesnt seem to come with much wrt safety for toddlers and if there is a suffocation or over heating risk once they're a little bit bigger. TIA