But not whether other adaptations could be possible. Fix the digestive tract issue and keep the female well fed and defending the nest in a different way
There's no single mutation. Nor is their sensecense merely a digestive tract issue. This is a core feature of their lifecycle. If you mutate the genes that make the hormones that trigger it, or the receptors for those hormones, you won't just prevent their sensecense, because those genes have other functions important to other parts of their life cycle.
But not whether other adaptations could be possible. Fix the digestive tract issue and keep the female well fed and defending the nest in a different way