This sounds like a genuinely stressful situation that is so hard to give advice on :(
I’m sorry for suffering. I’d say there is a lot to unpack and you need to try and separate out your own feelings towards the pregnancy and completely remove him from the equation really.
If it’s just (“just”) your mental health causin you dread, but when mindfully thinking about being a mother you feel you want the baby, I would urgently seek an early booking in appointment and explain over the phone/on the referral form that you have real concerns over your mental health and would like support access ASAP..
If you genuinely do not want a child, and your mental health is also meaning practically you wouldn’t at all ever be able to cope with one even with treatment and support, I would seek a termination.
It is really important you work out your own feelings about this pregnancy though, as both raising an unwanted child and having an unwanted termination can be really devastating mental health wise, which is really something you don’t want.
I would continue to remove your partner from the equation, as callous as that sounds. It is hard and to me it’s not black and white as to whether he has an influence or not, but ultimately it is 100% your decision and the decision should be based on whether you think you could cope with pregnancy and parenting, and not anything else.
If you do want this baby, frankly don’t be put off by your partner’s attitude. Parenting changes people and to be honest if you think his parenting is genuinely damaging or abusive, you can leave him. You know him though, is he likely to be completely unwilling to compromise if you tell him you are against pushy parenting etc? There’s nothing inherently wrong with wanting your child to be successful, but you know what the context is of him saying that and we don’t. It’s a bit odd I would say, to be talking so much about discipline and success at the baby stage. Is he saying this wistfully and thinking about the future? Or is he kind of telling you how it’s going to be and exerting some control over the situation?
This is all up to you remember OP, feel empowered to take control and seek whatever support you need and to make whatever decision you need to make. Good luck 