I'd assume every mother needs support though.
Motherhood isn't something we should be doing alone. Everyone would struggle with that. It's good if op has a good family support network.
I would however argue, and perhaps you'll also consider this 'ableist' but, if you get cognitive burnout easily, you probably shouldn't be having kids. I don't see how you could function without getting the space and time to yourself when you need it. Which, support system or not, could happen at a moments notice. If you have a shut down, the baby won't just, stop crying.
Also, if you have autism and have a baby with another autistic person, even if you are high functioning, it might not work that way for the child. I've seen it first hand with a friend of the family. The mum was relatively high functioning, the dad had a bit more of a struggle but the kid... I mean, it's like she has their issues multiplied by 10. The daughter is being fostered now because the parents could not cope.
You might not want to hear this but, genetics aren't 'ablest'. They're just fact. Two autistic parents would have been a huge risk for a very unwell child.
Of course, things can go wrong for anyone, regardless of their physical, mental, emotional wellbeing tbf.
But just don't think because your autism is manageable, it will be for your child. Could you, really cope if things went that way? I'd imagine anyone would struggle.
Now you have time to think on it.
Children aren't an entitlement, not for anyone.
Some people can't afford them, some people would pass on illness, some people just don't have the genetics they should take risks with. I don't think that's ableist, it's just sense. No one has the right to everything they want just because 'other people have it'.
It sucks. But that's life, for everyone.
I suppose everyone has the right to take risks though. Or make bad choices. Or be selfish. Or hope for the best and plan for the worst.