I understand your fears. I am no expert in this at all...but I think the more contact they have with you will actually cause less anxiety.
I totally spoil my pups! And they are always SUPER excited to see me when I get home. But, I really feel that while I am away they are just fine. Probably can't wait until I return, and listen for every little sound hoping it might be me...but still okay until I return.
I think that is just dogs in general, and one of the best things about them. As humans we tend to put our human feelings on our pets. The way we think, feel, respond, and act is just so different.
Maybe try something new and see how it effects the behavior. Sometimes it takes a little trial and error to find a solution that will work.
Again, best of luck to you! Keep us posted.