Some advise please

So my 2 year old boy is has suspected autism he hasn't yet been diagnosed and the diagnostic stage seems like a long journey however its pretty clear he shows so many traits. My little brother has autism and my sons fathers brother has it to so I know what to look out for. I also know they are all different I know how big the spectrum is and each person with autism show different behaviours. I'm struggling with my boy recently. He cries alot, has meltdowns alot, is uncontrollable with hand flapping and playing with others is a definite no. Recently hes been crying at anyone and everything we cabt even say hello without him crying and covering his ear which i know is sensory overload but why is he doing this with his usual family member that he sees everyday.

Please dont judge me I'm just so lost and I'm crying out for some advise on how to deal with a child with autism. I love him no matter what but I'm lost on how to cope and how to assist him yo make him feel happy and comfortable in his surroundings i try my best everyday to make sure hes happy and smiley but he just doesn't want my attention. I can't even take a picture of him because he HATES the camera which really upsets me. It's got to the point I'm feeling distant from him and I really hate feeling this way