Likewise our full timing plans do not call to travel everyday or in long segments. We may only cover 300-500 miles and then stop and stay a a month or more at a time.
Our tow car gets 35-40 reliably so we should be fine.
Yes the budget for fuel has to go up in planning but considering all the other items that have gone up too fuel is just part the total picture.
I can remember years ago planning on full timing in retirement. We estimated then that fuel could hit $1.50 per gallon while we were on the road.
Times are changing! And it's like anything else in life we just have to make adjustments.