No idea what the situation is but I’ve known of a bunch of people who had extremely difficult times getting pregnant who cut seed oils, excessive grains and carbs (basically going keto/carnivore), cut all artificial ingredients, removed the most toxic cleaners from their homes, stopped getting vaccinated, and did essentially all of the lowest hanging fruit for cleaning up what gets into their body, and their fertility flipped in a matter of a few months. Literally from being told they likely won’t have kids, to pregnant.
Again I have no idea what your situation is, but just in case you didn’t know or hadn’t heard of this before. It something I would try if it applies to your situation.
Aside from that have nothing meaningful to add on adoption.