What I remember about the WT interpretation of Genisis and Creation is this.: ( 1960`s onward )
Gen.1:1 "In the beginning God created the Heavens and the Earth" That statement stands alone , it could have happened millions of years ago .
Verse 2 onwards is confined to the preperation of the earth for humans to live on.
The 7000 years as a timespan for a creative day came about of their Bible chronology that humans since Adam have been on earth for 6000 years ending in 1975 ( previously they thought 6000 years ended in the late 1800`s )
Gods rest at the end of the 6th day ,and Jesus Christ 1000 year rule would have been appropiate to begin around 1975 , culminating in a 7000 year creative day.
P.S. Fossilised dinosaur bones have , and are , still being discovered in Queensland Australia to this day along with fossilised footprints , it is a vast project in motion....AAoD , Australian Age of Dinosaurs.
Jehovahs Witnesses are well known for having their head in the sand , as well as having their head stuck up their ( well you know where ) I was one of them .