Well done!
That took enormous courage and reserves of strength. So glad you're safe in a sane space with someone who supports you.
He's just crashed into phase 1 of the coercive controller's attempt to seize back control - the Mr Nicey Nicey mask is on. Tears, apologies, I'll do better, I'll change, presents, romance, promises … all designed to reel you back in to where he feels you belong; under his eye. Under his control. You'll be bombarded with it, love-bombed, and if you give in to the attempt, and take your child back to this toxic mess, the Nicey phase will not last. The mask will slip and it will all begin again, because that is his true personality. It took a while to emerge - but luckily it did before you bought the house.
Stay strong - you'll need support from mum, friends, women's aid and us, because when phase 1 fails (as it hopefully will because you're seeing through it), he'll go into phase 2 - Mr Nasty. The threats. To self-harm, take your child, harm you, harm your child. It's a well known Script, a programme they cycle through when they realise the one thing they want - to regain control over what they perceive to be their property (you and your child) - hasn't succeeded.
Also look out for the undermining, the 'you're crazy' message - gaslighting you, trying to make you believe you're in the wrong, and trying to manipulate family and friends 'she's crazy, see what I had to put up with?'. All part of the Script.
The more you're aware of it - thinking oh yes, he's switched to that tactic now - the stronger and less confused you'll feel.
Love to you, your child and your mum.