OP, I spent years blaming myself for my son's oddities and issues.
GP offered parenting classes, no one suggested anything other than a trauma / parenting issue.
A school headteacher dropped a few hints and then the penny dropped. But the NHS refused to assess as not enough evidence.
So I started with an ADHD assessment privately. And at the end the guy said, based on this and the Connors questionnaires, ( completed in 3 settings by 3 people), definitely ADHD. I said,do you think any chance of Autism? He said I don't assess for that so possibly speak to x, y,z.🤷♀️
You have lots of professionals dealing with all these differences but only certain professionals really understand and can appropriately assess. I can't stress that enough.
I then searched for a good Autism assessor myself. I wanted to be sure they followed all guidance regarding how to effectively assess. I wanted a female too. They also assured me they'd happily be contacted should anyone challenge the expertise of them, their process and diagnosis. This was really important for me. ( Gaslit to high heaven prior).
I sat in on this exceptionally thorough Autism assessment and saw things about my own child I'd never realised. This was by age 10. I felt so bad. This is common I believe so no room to beat yourself up now OP.
I recently consulted a great ND aware psychiatrist to discuss support options for my son. ( Private again of course). The most important thing she advised was to write to the school, it must be in writing, and ask them for a copy of the IEP for our child based on identified difference and need.
Things might be relatively ok now, but the wheels do and will fall off as children with support needs get older and especially by secondary.
An email might look something like;
Dear SENCO, please see attached Ed Psych report. I'm eager to discuss how school will be able to support identified learning needs based on these findings. It would be helpful to have sight of an IEP for ( child) wherein the support she will receive for these learning needs are defined.
Could you confirm when it would be possible to have sight of an IEP for ( child) based on identified needs. If you require any further information from me, I'd be more than happy to meet with you.
I am in the process of exploring feasibility of an Autism assessment based on ( child) having a diagnosed sibling and will keep you abreast of that.
Best wishes
This might feel like too much. I can't stress how hard this stuff can get by secondary. Doing this is just paving the way and let's school know not to try dodge this. They will try dodge approve support because they're really struggling resource wise. He who shouts loudest is the game right now. Maybe you aren't ready now but down the line you'll need to advocate hard. 💐