would recommend to be a good prep.

If you know the time control of the tourney,
you can start (or continue) to play online games with similar time controls,
or, if you have a physical timer, do the same with opponents in person.
It is good practice to get used to hitting the timer buttons, watching your clock,
managing your time (opening, mid-game, endgame, etc.), and even picking up captured stones
under time pressure.
For an extra challenge, you can even give yourself LESS time than the tourney time control, as a training idea.
Good luck.