Nice try but there is no reference point. Either Adam lived 930 years outside the garden or he lived 930 years From his creation.
Adam was not born of a mother so he had a navel?
When he was in the Garden, he was immortal, yet he counted years?
After immortality, there is one reason to count time and that reason is an awareness of death.
The truth is no one knows how long the Garden existed, there is no way to estimate the age of the earth from the years people lived. There are however insightful references to firmaments and light.
It’s not “try”, it is what God says, who cannot lie.
ALL THE DAYS THAT ADAM LIVED is pretty clear. From his birth, to his death are all the days that he lived.