I am guessing you guys are using treats with the birds to encourage them to you?
This is what I use and being the piggys that they are, cannot resist a tasty morsel even when they are not interested in interacting with me. I also tend to ignore them and 'play' with their toys or something they are interested in, they soon decide to get off from where they are and have a look at what I have!!
Not sure where you are located, but are they going through a moult? I find they tend to become a little less like socializing when moulting.
Otherwise I think maybe if you could spend more time with them when you are home, if that is possible. Like when watching tv, on puter etc.
Good luck.