We're struggling too! Already used our boys name on ds 1! We have a short list but still kinda meh! about them all!
Dexter (dh top choice)
Callum/Callen (my top choices)
Caleb
Theo
Samuel
Spencer
Jasper
Archie
Greyson
Jenson
Caelan
Asher
Harrison
I loved the name Riley for a boy but I'm having a girl plus Riley didn't really go with my oh surname so couldn't use it even if I did have a boy lol
Some other suggestions:
Max
Leo
Jack
Oliver
Lucas
Jacob
KAH1990 - What is your DS1 called? We were the same, loved our sons name straight off (his name is Addison) and have found out we are having another boy but don't love any boys names so far, and I have a massive list.