Helping an autistic child adjust to newborn

[Lcw29]

I'm due my c section in 3 weeks. We have two lovely boys aged 5 and 7. Our oldest is autistic but what people would consider high functioning. However emotional regulation is an issue. He's excited about baby but nervous. He's worried she won't like him or that we won't love him as much. All the change etc...
We've been trying to prepare him over the months but does anyone have any ideas to help ? We want to make the transition as easy for him as we can x

Buy both of them a toy from baby. Get a card from Moonpig or whatever that says just how excited baby is to have them as her big brothers. Get them to buy gifts for the baby and make a big thing about how lovely they both are and how there's no way she won't love them. Tell him you will have 1:1 time with him and stick to it.

For my son, not diagnosed but on the waiting list for assessment, we talked about baby daily, showed him videos of babies crying, he sang to my belly every night, told him there would be jobs for him to do if he wanted to, lots of time for cuddles etc., he picked out a toy zebra for her and was so excited to give it to her when she was born. Our 1:1 time was cuddling up on his bed and reading a bedtime story every night. We did it anyway so it wasn't adding anything else to our schedule but it made him feel important still.

They're 2 and nearly 7 now and absolutely adore each other and have done since day 1. It's a lot of unknowns for him but once she arrives, you'll probably find he's absolutely fine with it all ❤️

Thank you so much. That all sounds lovely! Great ideas thank you. He's already said he wants to help out. He's a sweet boy and enjoys having a job to do. ❤️