Which methods are those? Do you have a link?
I saw them both mentioned by people in either YouTube or reddit comments on other overall topics so I don't have a link, sorry.
One was about the impact of apple cider vinegar before meals, the other was on eating fat and protein first in a meal so the carbs sit on top of the other stuff in your stomach, so it doesn't spike your blood sugar so much.
When I looked into it, the apple cider seems to be extrapolated from any kind of vinegar, so I started eating way more pickled things - I like them so it's much easier then drinking vinegar mixed with water everyday
When I posted this for example, I'd had a huge spinach and tuna salad, with egg, grated cheese, gherkins and pickled beetroot. When I'd eaten most of the pickled stuff and had about a 3rd left overall, I added two big pieces of granary bread with butter on and the combo of both tactics worked for me.
Its worked for me with pasta too - I bring a jar of gherkins with me if I'm eating at someone else's house now, which probably does seem weird.