Step Up Meaning
(transitive, idiomatic) To increase speed or rate.
Example: They will need to step up production if they are going to compete.
2012 May 13, Alistair Magowan, â€œSunderland 0-1 Man Utdâ€, BBC Sport:
United were made to pay for letting an eight-point lead as little as five weeks ago slip and, despite their final-day efforts, they will look back on a season where, when they needed to step up, they fell flat.