Interpretation of Genesis isn't just a JW problem, but one for all Biblical literalists. The Old Earth Creationism position, which JWs share, or at least did when I was involved, is probably the most ludicrous from a scientific point of view. To accept the age of the Earth, but then to insist that the faunal succession is not evidence for evolution (bearing in mind that faunal succession is a key evidentiary link between evolution and geology) or in fact to reject such a notion entire demonstrates just how much cognitive dissonance there is in the Creationist camp, irregardless of membership in any particular sect.
The claim made by JWs, and many other Creationist sects besides, that Genesis 1 is a scientific account is ludicrous on its face. The creative order is not at all what scientific discovery has shown. Beyond Genesis 1, the whole book is suspect. There is no evidence for a global flood, and, in fact, serious physical problems with even trying to formulate how one could happen. Noah's Ark is an impossible structure which could not be built out of any wood and still be expected to remain seaworthy and structurally sound for a few hours, let alone several weeks.
Actual analysis of the creation stories in Genesis indicates two such stories, and also demonstrate that the ancient Hebrews (like all such tribes in ancient Palestine), had adopted the Sumerian cosmology, with a circular, flat earth and a crystal dome above it. Re-read Genesis 1 with that cosmological model in mind, and it actually makes sense. It is a mythological story based upon a cosmological model common in ancient times among peoples from the eastern Mediterranean through to Mesopotomia.