assimilate (oneself/someone/something) into
To blend into; to merge with. Can you please help assimilate our new student into the class? I've assimilated your suggestions into the existing curriculum. Do you think Sam will be able to assimilate himself into the group? He can be pretty standoffish.
assimilate someone or something into something
to cause someone or something to be absorbed into something. (As when a person or thing joins a group.) We sought to assimilate Arnold into the community. The manager had to assimilate the new policies into the list of current ones. They assimilated themselves into the general population.