Don't know how prevalent CCS chargers are in your neck of the wood, but if this has been me, i would just have gone to the nearest CCS fast charger and given it a "blitz"
I did a couple of fast charges yesterday, one from 8% til 95% in 1 hour 15 minutes, and only this long, because i was doing some border shopping and needed to get something to eat as it was 6 PM.
From 8 until just before 80% it was REALLY sucking the cable hard...Nearly 90 KWh most of the time, but when it got to 80 it dropped to 20 KWh, and right before 90% it dropped to about 5 KWh.
In reality, it took no more than about 40 minutes to go from 8 to 80 %.
I then drove it on the motorway at 110 kph on the cruise control, and the calculated real range is somewhere in the range of about 350 km, this is offcourse from 100% to 0% so not really feasible, but you can easily get 300 km from a full battery, before you need to charge. (If there is a charger at that exact point on your trip).. (And if you ignore the very angry lady saying the battery is low and to recharge as soon as possible....From 20% down)