Fortunately I don’t have lactose intellerance issues. Three of my grandparents came from dairy raising farm holdings. Just before the recent major snow and ice storm, I went out and bought 2 gallons of milk for myself. A nice 8 day supply.
My dad drank gallons of milk, probably 2 a week, all of his life ... his love of milk stemmed from his childhood when his sister milked the family cow(s) & the fresh, unprocessed milk was kept cold in a spring house. As he aged into his nineties, people would ask him to what he attributed his longevity .... his answer was always “milk”. He passed away 22 days after his 100th birthday.
My mom grew up on a dairy farm & when we visited, Granny always had a Mason jar of fresh milk in the fridge & hot, homemade cinnamon rolls ready for us. Unfortunately, neither parent evidently passed on anything helpful to me as far as tolerating lactose is concerned .... consider yourself fortunate!