Just use your EV like your petrol car. For most part overnight charging, is most convenient. Away from home, i use Tesla charging, the £90/year and plan the trip on that. If the route doesnt have a tesla chrger, just go with the fastest charger. Even if it costs 90p/kwhr, it doesnt matter, you do that option so rarely, its not a factor. Irs still xheaper than a perrol car. The last time i filled up a car, had a day trip to the seaside an it cost £50 (i cant remember lol).
The bottom line you drive the car and use its luxuries, penny pinching is not what its about.
On a side note, i popped in to tebay Nortbound for a pee and plugged the car in for a short charge, jyst to add 20 miles or so to give me a little leeway until the next Tesla charger. I dont know what make they wre but it was putting 200kw into the car, never had a fast charge like that before. Needless to say it only took 4 mins an was unplugged. Wasnt too bad either i think it was 69p)/kwhr. But yup that was the fastest chargjng av had.