Possible signs of autism?

Hi everyone. I am in no way saying that autism is bad and I have something against it. If my son were to have autism, I wouldn’t love him any less than I do. I’ve noticed some things that he does that concerns me and he’s about to turn 11 months in 4 days. So I know it’s way too early to determine if he has autism but please let me know if you have a child or know anyone that has shown these signs and had autism please...

I have to note, he started crawling at 8 months, pulling up to stand at 8.5 months, took his first few steps at 10 months, but isn’t walking yet.

The majority of the time he doesn’t respond to his name when I call it. He doesn’t clap. He doesn’t wavy bye bye. He doesn’t babble a lot. He used to say mama, dada, papa, quite often and just hasn’t in a while.

I also noticed he started doing this thing where he would open and close his hand on top of things like if he were to grab onto my shirt he would repeatedly open and close his hand on it. He does it on his high chair tray and other things as well.

I am over thinking everything, googling, researching and I can’t get my mind to calm down. I don’t know if he’s regressing or not progressing at the rate he should be for his age. Please help me out. I just want experiences and advice please. I have anxiety over little things that I can’t help.