I AM, formerly the Autistic Society of Greater Manchester, says they have heard of delays approaching three years. I AM operates a telephone and email service for parents seeking support with autism and Helen says one of the main issues has been long wait times.“This issue around diagnosis and the routes to diagnosis has been an ongoing battle for many parents for many years,” she says.“We're hearing the delays in diagnosis in Manchester can be anywhere between six months to almost three years in some cases.“It can feel completely overwhelming when you’re desperately trying to seek support but are getting stuck in the situation.“If you haven’t got a diagnosis then it can possibly shut the door for you in terms of accessing support.“You need.