Yes, you could do that already before as well:
sudo i2cset -f -y 3 0x6a 0x00 <VALUE>
where <VALUE> is between 0x00 (100mA) and 0x3f (3.25A). See https://www.ti.com/lit/ds/symlink/bq25895.pdf page 32. You can verify the currently set value with
cat /sys/class/power_supply/bq25890-charger/input_current_limit
This is also useful to set input current limit to a higher value than the default 500mA when using USB-A chargers.