Autism spectrum

I am a confused new mom who is concerned about few issues of her 2.5 year old toddler. Firstly, my son tends to flap his hands vigorously when he gets overloaded with excitement. Secondly, he does not point at objects for wanting something. However, he does point with his index finger when asked to direct at something. Please note that, he has 600+ clear vocabularies, few meaningful sentences, good eye contact, good cognition, recognizes emotions, wants to be with people, does pretend play and doesn’t show any routine or repetitive behavior or fixation to any particular objects. Can the behavior I am concerned about be indicative of his being in the spectrum?

Hi My baby is 7 months and recently she started arm flapping and twisting at the wrist. She often screams & stiffen her arm,legs and body.Otherwise she’s achieved all other milestones of her age. She smiles,plays with me,identify familiar sounds,good eye contact & sits without support.Should I be worried about the flapping/screaming/stiffening?Kindly advice

My 7 month old does finger flicking a lot on surfaces such as toys, clothes, my neck when held. sometimes in air too(rarely) Is it something to be worried about?

My 5 month old daughter some times flaps her right hand for 2-3 seconds. We have read that flapping hands are a sign of autism and hence feel worried. Should we?

My almost 3 years old son has recently ben diagnosed with autism spectrum disorder. He only says a handful of words. So im trying to learn ASL (sign language) and trying to teach him. Any one have tips tricks hacks that made communicating with your child easier!