Apologies, I wasn’t being critical of your initial response. You mention that most would disagree with my approach to over extract, which is exactly to my point ie what would they suggest in my circumstances.
My preferred drink would be a strong milk based coffee, so if I go to a chain coffee shop I tend to ask for large latte with extra shot. I sometime opt for oat milk and when I’m at home I’ll often have a flat white as I like to avoid the extra calories that come with too many lattes!
My grinder is a niche zero and I either use waitrose Lockhils water or tesco ashbeck.
I’m more than willing to try new methods and don’t mind the trial and error approach. To be explicit, I’m asking for suggestions on specific methods to go away and trial.