Natural gut looses about 8-10% of it's initial tension before it "settles". Of course, it will continue to loose tension but very very slowly at this point (especially compared to any other type of string!). Usually you will break a string before it goes much further than the initial 8-10% loss.
If you want the "sublime" feeling faster on your next set, try Wilson NG. It does not have the BT7 coating that makes the Babolat NG feel stiff. Many claim Wilson NG is the original Babolat VS gut still made by Babolat for Wilson... "Made in France" is printed on the string