Hi OP.
I understand you're worried, and I'm not going to pretend it's easy. I am autistic and so is one of my DC.
My son is nearly 8, he is generally a happy little boy. He has a lot of support in place and he loves his school where he is respected , accepted for who his. Educationally he is thriving. On the social side he is very immature and does not have great social skills but he has a few good friends and again, he is happy.
I had a horrible childhood full of abuse and I am NC with my family. I have good friends who are my support network and I have had a good career. I have a nice part time job working for a charity which is very fulfilling, although it doesn't pay much money it fits around my family.
Sometimes things are hard, it's a struggle to get supports in place, and you have to fight the authorities all the way. Sometimes people are judgemental and explaining about my/my child's autism doesn't always bring pleasantness and understanding. Sometimes people are nasty and cruel.
I hate how parents of young children going through the assessment process are presented with the idea of autism being a list of defecits, all about the things they can't do, the milestones they are not meeting, the areas in which they are "behind" their peers. Autism is so much more than that, it's not all about what we can't do. There are many things that we can do, there are many advantages. If we are always being measured against what is "normal" for a neurotypical, then we are always going to fail. Unfortunately there is far too much focus on what is "wrong" with us (according to a neurotypical criteria). There is nothing wrong with us at all. We think in a different way, and we see and feel the world in a different way, but there is nothing wrong with us. We are not flawed, or a problem, or a disease to be cured.
I would advise you to look up the "Neurodiversity" paradigm and movement, and read as much as possible that is written by autistic adults and young people. This is a way of thinking that emphasises the postitives of autism and the value of autistic people as fully functioning, valuable people in their own right, without ignoring the reality of how difficult is for autistic people trying to fit into a neurotypical world.
I wish you all the best on your journey. Check out the National Autistic Society information and find out what support services there are for you locally. If you have a positive attitude towards autism you're little one will be fine!