My DD has quite severe dyslexia - with lowest score in working memory.
School suspected since she was 6 years-old and had her tested at 7 and again at 10 (identical scores each time). Her main issues are spelling, a reluctance to read, and some organisational issues if she's expected to retain a lot of information (ie send her to get 3 things from her room and I'll be lucky if she remembers one of them).
We did years of toe-by-toe etc (it didn't really help), and laminated sheets of high frequency words (somewhat useful) on her desk.
The game changer has been teaching her to touch-type and moving to a laptop for everything. We're also looking into speech to text options and then focusing on editing skills.
She qualifies for the maximum level of access arrangements on current scores, but due to Covid there hasn't been any interaction with the school SEN department, although I know she has been taken off to sit some tests along with other dyslexic children in her year.
The sooner you move to getting things established as the 'normal way of working' the easier it is all round. DD is the only child in her class with a laptop and there were a few comments on day 1 about 'why does x have tech, it's not fair' but nothing since.