Aw, Sandi - I think you are being wayyy too hard on yourself...give yourself some time to bond and settle into this change...sometimes it just takes longer.
I volunteer at a shelter 3x a week here and I can def say that these shelter/rescue kiddos *really* do go through SO much. So so so much. And so oftentimes when adopted, they get to their new homes and are kinda just in shut down mode / recovery mode / limbo mode -- it can take these little ones some real time to open up, blossom, bond, feel lively and safe again, and secure in their new place...with all these new smells, routines, people, dogs, surroundings. It's a lot for them.
So just let this little bud of a relationship bloom naturally -- bc it *will*. Trust
.
And bless your big heart for adopting him!! Btw, does he have a name yet? Also, piccies please
!