Hi Op
Your boyfriend indifference attitude ,is disrespectful to you.
Its a form of emotional abuse towards you and your very young son Op..
You are in a relantship with a man child,(really you are like a mum of two children being with this man child..
You need to tell him,you feel exhausted doing so much on your own,and can he step up his game,
If boyfriend will not or can't understand this, you better off splitting up, and him being your ex,
I think you proberely better off without deadbeat of a man child he sounds useless more of a emotional drain than anything...
Are your own family and his parents his family supportive enough of you, in regard of giving you a break and as a,break??
Sooner or later your son will start to sense his dad's attitude is off,
its susprising what small children can sense, Children are not dumb,far more inituitive than society thinks,
Best of luck,
I think you need it with man child joke /poor excuse of a partner.