I can see the problem for JW Org in accepting Evolution by Natural Selection as what it is, firmly established Truth. But, I can also think of ways they can spin the Adam and Eve story, I will not outline them here ! I do not want to help them along in their nonsense ! ( The Bible Chronology may seem insurmountable, but that is included in my way of dealing with the thing.)
The fact that they are so 19th Century about this, works against them to a huge degree. My own son when about 12 years old, he had been born in of course, thought to himself that what David Attenborough was telling him on the T.V was Truth, and that the JW thing was not. He never became a JW, and was the first mover in getting us to Wake up ! What an Achilles Heel this is for JW's ! There own kids educating them !
Long may the JW Org stick with their 19th Century nonsense of the Bible being literal truth, and teaching that the Bible stories should be taken literally . It only takes a word or two from someone you love and trust, who knows reality, to start you on the Road To Freedom.