Babywearing can be very useful to gradually create an attachment bond between the adopted child and his parents.
The carries you use will depend on how old he is and where he is from (was he worn in his native country?).
It must be done progressively, take your time explaining to your child what you want to do and ask him if he's ok with it.
Carries that allow him a wide field of vision (Vertical / Seated Cradle, hip or back carries) rather than a close, snuggling position are interesting while you slowly get to know eachother.