From testing with frequencies, and also just noticing how it plays the tension loss follows a pattern.
You will have tension loss in the first 24 hours of stringing, regardless if you play with it or not, no matter what. You will have some more tension loss the day after, but noticeably less compared to the first day, also regardless if you play with it or not, no matter what. Then you will have some tension loss after your first playing session as well.
If you want to test what tension you should string at, let the racket sit for a few days after stringing, use it for a session, and then truly evaluate if you like how it feels in your second session. That’s the level the tension will stabilize at. Any tension loss after that will be much more slow and gradual.
If you like a stiff stringbed you might find that if you do this, it might not play so well during the first session because the tension is a little high.