Posted: Yesterday at 13:00
I think if you're looking at 'beginner' plans just because it's your first time they might just look too easy because you're not really a beginner except at marathons. You might consider looking for a plan that starts at around the level of training you're already doing.
But also you seem to be doing all your running at your half marathon pace or faster, which sounds quite hard. Are you finding the pace comfortable and you've just improved a lot since your half marathons last year? Or is every run a massive effort? In which case you might start seeing the point of shorter, easier runs if you increase your total weekly mileage.