If folks would do 3 simple things, they’d lower levels and be in range. I’ve done all 3 for the last 10 years :
1) Give up all dairy products cold Turkey and completely for good . I mean everything.. no cheating at all
2) Give up red meat
3) Physical, strenuous cardio exercise 4-5 days a week .. preferably running or a combination of running , swimming, biking.
Most of the cholesterol and health issues will diminish and vanish. But you’ve got to make it a lifestyle change and be motivated to stick with it for the rest of your life. It’s not something you can do and then cheat and then change . Commit to it and have the personal stubbornness to stay with it for life .. for yourself and especially for your family