take a wrecking ball to(Miley Cyrus has taken a wrecking ball to her rivals after her number one hit was named the most sung song of the year by a karaoke website. Ballistic)
tighten one's belt(tighten your belt
idiom
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C2
to spend less money than you did before because you have less money:
: I've had to tighten my belt since I stopped working full-time.cambridge.orgAndrey Truhachev)