Our LO has been home since late last year but process took 22 months from start of training to getting LO home.
Process is ongoing though as they need to be with you for a certain amount of weeks (10 legally but again, it's likely to be late).
We're now waiting on court dates for the adoption order hearings but the judges calendars are bonkers.
The younger the better approach is quite common - everyone in our training group thought this at the start but some of us changed our minds.
If you have a child who is 11months old, you won't necessarily be aware of any developmental or medical issues as they may not be apparent yet, but with an older child you should have more information.
Also, the idea that there will be less trauma as they are younger isn't correct and is something they'll cover in training.
This changed our minds quite a lot - we ended up matched with a child who was 3 and having LO who could say "don't like it" and "yes" to various things did make settling in a bit easier.
The process is designed to push you into really considering what you can handle, but they approach it as looking for the right parents for the children who are awaiting adoption.
I would definitely do some research on adopting with a BC.
It would be normal for your child to feel insecure and it effect behaviour if you were to pregnant with a sibling however, an adopted child is likely to need so much of your time and attention to settle in that it could really throw your BC off.
For example, in my group, one couples LO was 18 months old coming home but regressed a fair bit so if she wasn't eating or playing, she was essentially put in a sling and attached to mum all day every day for weeks and weeks.
My LO was older but I spent the first few weeks with an unsettled shadow who I narrated my every move to (literally “We’re putting the clothes in the washing machine and now we’re pressing the buttons. Shall we put our shoes on and go to the park? Great, I’m just getting our shoes and now we’re putting them on our feet” etc). I had no real time for anything else so I would imagine doing it with a BC would be hard.
All that being said, I don't want to put you off. It's a tough road but my LO is amazing. Settled, funny, personality is coming out so much and it now feels like they've always been here.