So I've decided to call it quits with my sons father. We still live together until I can move out or…

So I've decided to call it quits with my sons father. We still live together until I can move out or vise versa.. Anyways what should I do for him for father's day? I'm not wanting to do anything too special since he's never done anything for me on any holidays like ever... Maybe just something from our son? Idk