level off

verb

1. Used other than figuratively or idiomatically: see level, off.

   “I poured some flour into the scoop and levelled it off with a knife.”

2. To get to a stable level; to cease climbing, descending, or oscillating.

   “Will the exponential growth in TV rights income at home and abroad that has fuelled the endless inflation of the Premier League’s high-octane balloon ever level off?”