Mppt goes into float before fully charged

I installed a 100/30 solar controller
And it goes into float way too early
Today it charged my battery to 77% and went into float.

What changes can i make to get it to stay in bulk until battery is closet yo 100% its wasting alot of solar. Spends 3-4 hours a day in float according to the history tab

This is what i am using
3-200 watt renogy solar panels in series
100/30 solar controller (i am upgrading this one soon)
smart shunt 1000
Epoch essentials 460 battery