Hey again @Danielle1989x
I ended up going to the dr and was told I had PP anxiety. Let me tell you when I say it took over my life, I was CONSTANTLY comparing him. He started to wiggle his fingers the other day and felt it creeping back in.. until I realised Ms Rachel taught him 'want' in BSL! So I really do feel for you. Autism is really not the be all and end all, but when you get something into your head you also mourn for the parent/child lifestyle you had envisioned in your head!!
My son started the hand movements at 7 months. They were like spinning and flicking fingers whenever he was excited (twisty wristy and twirly wirly toes we used to say!).. I used to HATE baby groups because he would do it when the bubbles came out and ALL the parents commented about 'aww how lively he's so excited' but at the time my anxiety was sky high! He would quite literally be like a propeller going round and round with the hands.
Honestly from an outsider and what you've described, he sounds like a happy 9mo to me!! Everything is new to them and they are trying to understand the big wide world and 9 months is so young. He sounds Exactly like my son was at the time. Hit 10.5/11 months and he stopped the hands! EVERYTHING you've listed he does!
The glue ear I found out because I noticed he wasn't responding to his name.. then I dropped a full bottle on his floor one morning (hard flooring) and noticed he didn't turn his head, couple bashes on the door and any hard surface he still wouldn't turn.. turns out he couldn't hear bless him! The glue ears resolved itself luckily but I contacted HV and they booked hearing test and his 1 year check early because I raised autism concerns - she told me he was excited and to enjoy him (WISH I took that advice then) and that hand flapping is very age appropriate - only in 2 years plus is it a concern she said.
My son hated cuddles, went off to nursery without even looking back and would get annoyed when I turned up.. instantly I was like 'he has no attachments, he's definitely autistic'.. which like I said, wouldn't of even mattered but it's hard.
Either way, I know that no matter what people can say in the internet it's really hard to get it out of your head. I promise everything he says sounds exactly like my son at the ages of 7-11 months for say and it was a tough old battle with my head. I think they say boys are slower than girls (I'm sure I'll get abuse for that comment like I've seen other get!) but my son and his little boy pals were different to his friends that are girls!! They were and are far more social-able the the boys. I noticed my anxiety calmed once the hand flapping stopped (he was 10000% picking up on the anxiety, he completely changed once I calmed down!!!) and he started to 'share joy' and his toys with me - again, this was only at about 11 months.
Sorry, waffling on but trying to reply to it all!! My son has learnt new tricks and then stopped doing them whilst he concentrated on another new skills! He learnt to roll and then stopped for MONTHS. So you can imagine my anxiety but in that time he learnt to crawl and pull himself up - yet to walk, unlike all his girl pals that are running around and a month younger than him!
Hope you're doing okay and know you're not alone in being a concerned parent. I'm on a December 2021 baby page on 'what to expect' and find that useful to compare.. even though you shouldn't but I soon learnt lots of my LO's traits were 'normal' and common xxx