Does anyone have a child with autism? How old were they when you suspected it and when did they…

Does anyone have a child with autism? How old were they when you suspected it and when did they finally get diagnosed? I’m like 99% sure my 2.5 year old has autism since she has a lot of symptoms similar to mine and I’m autistic as well. Any advice? I’m calling EI in the morning so that’s out the window for “advice.” Thanks!