Driving in heavy traffic

My daily commute usually gets me between 4.7l/100km to 5.7l/100km depending on severity of the traffic. Heavy traffic here usually means stopping every few meters or so. Today I tried as much as possible to keep the ICE in the region slightly below the dividing bar between EV and ICE. I achieved this by pressing the pedal firmly until it goes into the ICE region, then I let it drop back into the EV region while still running on ICE. I usually find that this helps to maximize SOC regen and I can see that the instant MPG is usually a lot lower than if I had applied harder pressure on the pedal. I have also turned off the AC when waiting in traffic. By doing this, my fuel consumption actually dropped to 3.8l/100km despite the heavy traffic, and thanks to a long stretch that I was able to do P&G, I ended the trip at 3.5l/100km with nearly full SOC to boot. I find that it is usually better to manipulate the ICE in the manner I described rather than the usual advice to keep it in the 75%-100% region.