I would start now having them together. It does sometimes take a while for them to get used to the idea but usually the one who needs the sleep most will fall asleep first.
My GS are in the same room (19 month & just 3) and often we had to take the eldest out of the cot and put back into bed but that hardly happens now.
You will hear many giggles as they play together which is great to hear but frustrating when they are supposed to be asleep.
Good luck with this and your move later in the year.
__________________ If your baby is "beautiful and perfect, never cries or fusses, sleeps on schedule and burps on demand, an angel all the time," you're the grandma. ~Teresa Bloomingdale |