Definitely go for an Ed Psych assessment.
For touch typing we used English Type Junior which is designed for dyslexics. DD loved it in Y6 and took her about 2 weeks to be pretty fluent.
Having things like spell check, editing software and read back functions have been a huge help. We found an iPad with keyboard much better than a laptop and switched to that in Y8.
Some kids do really well with things like Nessy, Toe by Toe or things like colour overlays.
DD is very anti audio books for some reason and I’m trying to convince her that a reading pen could make a huge difference to revision. When they have to spend a huge amount of effort just working out what is in front of them before attempting to actually understand it or learn it, anything that makes it easier should be a help!
Like a PP, I’m hyperlexic so found it incredibly hard to understand how my obviously bright child, who was a very early talker with an advanced vocabulary seemed utterly incapable of making sense of letters. School kept telling me she was just uninterested and would fly when she decided to get with the programme! Luckily she got a severely dyslexic teacher in Y3 who was on the phone in 48 hours to say we had a problem!
It’s worth watching their mental health and ensuring that you make the most of what they are good at, as they tend to feel very dim compared with classmates. DD is very musical - to a standout level - and so people have tended to ignore all the stuff she can’t do and focus on that which has been a major factor in building self esteem.
BTW, dyslexics may or may not also have major problems reading music. We only found out last year that DD cannot read sheet music and has spent 9 years pretending to. I’ve since met a number of very successful professional musicians and composers who also can’t, so it’s no barrier but worth checking (DD had managed to get way past G8 and plays multiple instruments before anyone sussed that she does it all by ear).