Yes. Two paths, depending on your situation:
Path 1: Wait for the automatic 5% growth (most reliable)
Every month you pay your second Split Pay payment on time, your approval grows by 5% the next month — up to a 50/50 split. This happens without any action on your part.
Path 2: Reapply (after eligibility expires or 30+ days from last application)
This is a fresh evaluation of your full financial profile. Your approval could go up, stay the same, or go down — see the FAQ on Will I get the same approval amount if I reapply?.
Worth knowing: if your bill amount increases but stays under your current approval, you don't need to do anything — Split Pay automatically adjusts within your existing limits. Reapplying is only necessary if your bill exceeds what you're currently approved for.