Plan your budget before the first spin
Decide your stake knowing that the bonus round cannot be timed. How often Free Spins arrive is not known in advance, and nobody can tell from the RTP how many spins pass before the first trigger. The result of one session is random, and the RTP figure in the table describes only the long run.
Read the game rules before you start, because they are the only place that shows which RTP version this lobby runs for Sweet Bonanza 1000. Check them again if you return to the game later.
Set your stake for the spins you plan to play, not for the top prize, because the maximum win of Sweet Bonanza 1000 is a ceiling that is reached very rarely. Treat that figure as the limit of the game, not as a target for any session.