People telling OP to "go back to work" and "buy your own property" are being naive. It's really not that straightforward. Men who are financially controlling can make it very difficult for their partners to work if they choose to.
Realistically, how will OP go back to work if her DP won't agree to pay for Nursery or a childminder? She says she has already used up almost all of her savings, she has said he doesn't give her money, just pays for bills and food shopping. She's put herself in a situation where she's financially completely dependent on him, which means that it will now be difficult for her to go back to work without some degree of co-operation from him.
We don't know what OP's professional background is, but I imagine she would need to be working FT in a very well paid job to be able to cover the cost of Nursery fees on her own and save up enough money to buy her own property, or even rent somewhere in the event she wants to LTB.
OP, this man is not your partner. He doesn't see you as a team. He doesn't even give enough of a shit about you to make sure you would be taken care of in the event of his death. He is more concerned about protecting 'his' money.
He could ask you to leave his home at any point and you would have no choice but to go. Nowhere to live, no income and no rights to any of the money that you've facilitated him earning by looking after his child.
If he died or became too ill to work you would also be screwed.
Do you have any family who would be in a position to support with childcare if you went back to work, OP? Just until you actually start earning and are in a position to pay childcare fees, assuming you would be able to earn enough to cover them. If you do have supportive family then now would be a good time to confide in them about the position you've found yourself in and the fact that things are "rocky" in your relationship.
Whatever you do, for God's sake don't have another child with this man.