Moving rooms

Hi, I’m currently pregnant with baby number 2. My son is 6.

Our house is over 3 floors, on the middle floor is the living room, bathroom and the smaller bedroom. On the top floor is mine & husbands bedroom and another large bedroom, my son is in thus room currently.

When baby comes and it’s time for baby to have their own room, should I move my son down on the middle floor or put baby on middle floor?

I struggle because I feel bad moving my son out of his room 😣

Why suggestions? X