Telling first born about second baby?

My son was about the same age when I got pregnant, I told him after 12 weeks when I started telling people more widely incase he started talking about it more 🤣 But tbh he didn’t fully understand, so ive told him multiple times since (currently 27 weeks, he was 3 last month). I think its started helping more as bump has got bigger

We told our son as soon as we found out. He doesn't get it at all. We think he thinks we're getting another dog, lol. Every time we mention he's going to be a big brother he either pets or hugs our dog

My son will be 3 in Dec and baby #2 is due Feb. We told him just after we told everyone (13w), but he didn't get it. Mentioned it maybe every other week. He now knows there's a baby in mummy's belly, and he can name his friends who have baby siblings, but I don't think he knows there will be a real baby in his house forever 🙈 We plan to start reading "new sibling" books daily from Christmas, yet to find a good book though.

@Catriona were also due 2nd baby in Feb. My mum has bought him one of those personalised books online where you can change the name and what the characters look like. So he recognises himself, mummy and daddy in the book which I quite liked

Thanks everyone 🥰