Ngl as someone who generally plays on the highest difficulty with multiple weakpoints I don't really understand how. Unless you've intentionally lost a bunch right at the start then never used the church to remove your weakpoints. As far as I'm concerned the only hard progression fight is Perpetua. Not saying there aren't other hard fights but imo thats the only one you may be limited in strategy unless yoiu grind a lot.
Either way I'm just going to assume you did what I said prior, which is lost a bunch then didn't got to church to reset your fetishes and sensitivities. If you do that I'm pretty confident you'll find it easier.