When you say they’re struggling to get their head round some issues what do you mean? Is it they don’t understand how you might parent, or what potential children might need, or something else.
I think it can be helpful to talk about how children waiting for adoption often have complex needs because of their journey to adoption and maybe point them to some reading Adoption U.K. have some helpful resources. I’d also be thinking about what you need them to understand- what will actively help you in your parenting and what is actually none of their business.
The danger in sharing too much just now is you actually don’t know the particular background of the children who will become yours. People make a lot of assumptions about parental drug use, poor mental health etc and may feel quite free in sharing those views (you see it on the main boards any time adoption or looked after children pops up for discussion), which you’ll need to grow a thick skin about. You might also feel pressure to share more about your kids backgrounds than you, or the children, might want and once it’s out there you can’t take it back.
When mine were being placed I sent an email round relevant family members explaining that in the early days my kids would need time to settle in, that we’d introduce them to family gradually and that while adopted children generally had a tricky background (including trauma, addiction etc) for their privacy I wouldn’t be sharing the details of my children’s background. That was enough initially to set boundaries for my kids, with more conversation with closer relatives about the kind of support that might be helpful. Would something like that help at this stage?