Ya I'd switch to at least every 10 days, even 14 wouldn't hurt at all. Boas don't metabolize like other snakes and feeding every 7 days is too much. Just because she's waiting for food doesnt mean you need to give it to her, don't let her fool you shes definitely not starving. I feed my younger boas every 10-14 days and my older boas every 14-21 days and trust me that's plenty of food for them.
Even brand new baby boas? We just got one that is now about 5 weeks old. I have seen suggested to feed every 7 days. At what age do you switch to 10 days?
If nothing ever changed, there would be no butterflies.