Update Dorchester Parks to accommodate Disabled children & young adults with additional needs

I am a mother to a 10 year old son who's severely disabled after contracting meningitis at 11 months old,
My child has always been small enough for me to allow him to join in with his siblings & other children using the parks equipment like slides, swings, roundabouts. Seesaws, ect whilst being on my lap. Unfortunately he's now a 10 year old lad who needs hoisting with no upper body control this is making it difficult for me to be able to hold him on the equipment whilst he plays.
There's equipment to suit children like my child so they don't have to miss out and can enjoy playing in the park along with other children his age,
I'm asking for the local councils to support this cause so children don't have to feel isolated in their own communities