Your scale may not be telling you the whole story. If you don’t already have one, get a scale that also tracks your body composition ( fat, bone, and lean body mass). Also, take measurements. If you’re already eating lean and doing regular strength training, any fat you’re losing is being replaced by muscle.
As a fellow non-counter it can be hard to narrow down what’s just normal plateauing and fluctuations and what’s habits slipping a bit. I usually think of it like a spectrum from meticulously counting and unrestricted eating, and then I swing the dial a bit. Whether that’s trying to make certain substitutions, being more mindful of when I’m full, etc.
Based on what you’re describing, you might be a little low on protein. It might help to add some more for muscle building to bring up your resting metabolism and the satiety of it might help to curb some unnecessary snacking.