Jaundice at 3 weeks? With levels getting higher

Ta

So my LO is 23 days, and has been getting checked for jaundice, he wasn’t showing any signs while at hospital. However now his level is belliruban total is at a 15, and another level is in good range between .5.

I just got the call to take him off breastmilk for 24 hrs to see if it’s breastmilk jaundice. Has anyone had anything like this happen?

I’m just a worried first time mom.