Ours (7 too) was keen right through the process but then after panel when they told us about a potential match we got the room ready etc and that change just completely threw him, made it real and now he doesn't want it to happen. (That match wasnt right it turned out) Its really really hard. For ours its the change itself he doesnt cope well with, hes the same when we changed the sofa, and the car, and i do think hel be fine in time but its defo a big worry. Weve gone wild on books: doc mucstuffins when they adopt her little sister, books on 'coping with change', and:
You're the Biggest : keepsake gift book celebrating becoming a big brother or sister on the arrival of a new baby, Lucy Tapper
All About Adoption: How Families Are Made and How Kids Feel About It, Marc A. Nemiroff
Am I supposed to feel this way?: A seven-year-old birth child's experience of adoption, Archer, Elizabeth
Gus Becomes a Big Brother: An Adoption Story
Lonczak, Heather S
I'm a New Big Brother: A Pirate Pete book (Pirate Pete and Princess Polly), Li, Amanda
Topsy and Tim: The New Baby, Adamson, Jean
But so far nothings made much difference.
My son likes that Frodo was adopted by Bilbo so if yours is a Hobbit fan that might help?
I think its really difficult as its such a waiting game and takes forever so maybe too much talk about it adds to the anxiety? its really hard to know.
Good luck, and let me know if you find anything helps yours!