Do you have a local parent carer forum or carers’ group?
Our local parent carer forum gets well known education solicitors or barristers to give a workshop to parents sometimes.
There’s a monthly meeting for carers in my town; and the county wide organisation arranges for someone to come and give a talk every other month. Obviously, some talks will be irrelevant, because they are about caring for dementia or whatever; but underneath it all, carers have the same problems with social isolation, stress, dealing with endless bureaucracy; whatever their age or the conditions they deal with.
One of the local condition specific charities also runs parenting courses.
They are all good ways to meet up with other parents of children with SEN, who are the people most likely to get, what you are talking about!
There are some online forums - sometimes condition specific. Some of the best advice, I’ve been given on DD1’s epilepsy in the early days, when I knew nothing about it, came from parents on epilepsy forums.
I also joined all the national charities, relevant to DDs, such as Afasic, the Dyspraxia Foundation, Mencap, Rethink, Epilepsy Action, The Epilepsy Society, Metabolic Support UK and looked out for their national conferences, workshops, etc and those by IPSEA and SOS!SEN to educate myself. Some have free helplines.