I'm adopted, but because I had suffered abuse and neglect, I had terrible behaviour problems.  It is to be expected to have a few settling in issues on all sides, but you have to deal with them as though these children had been born to you.

I'm sure you could find adoption support services in your area, so try looking them up.

I think what you are doing is very special.  Those children are going to be so blessed to have you as a parent.