im not sure when to put my b/g twins into beds, theyre 2.4 months, my daughter understands everything and I think shes ready but my son has a speech delay, I don't think hes ready, I don't think he will understand that he has to stay there... not sure whether to change my girls bed and leave my sons cot for now or just take the plunge, change both cot beds and deal with all the getting up?! anyone been a similar position...