Lisa,
I'm glad your husband is on the mend. I hope he'll overcome his denial. My Mom lives there, with diabetes & heart disease.
I've trained my males (they are fully flighted) to return to their cage and go inside on command. I just clapped my hands and said "good boy, good boy" when they would do it right. When they resist, I turn off the overhead light (there is another small light in the room) and they know I'm serious. They seem to like the excited "good boy" that they get. Lovebirds love drama and excitement, so get really excited for them and you have their attention. If you've ever been bitten by one and screamed, you know what I mean.