Toddler's sleep

What should i do ?

So i have a 4 (3 and 10 months) years old and a 2 months old baby.

We live in an apartment and we dont have much space. I dont want my toddler to feel left out since me, my husband and the baby sleep in our room and my toddler sleeps in his own room... but he is sensitive, and i donntwant him to feel left out.

What should i do ? Or do you guys have any other suggestion ?

My room is small and i cant put a third bed.. and he cant sleep on our bed since its not that big, its only enough for me and my husband.

And my toddler's bed is bunk bed. He sleeps down and the upper one is empty .. i can sleep there but i have a 2 months old.. im really torn