I came to offer similar advice. I don't recall whether butter is problematic for someone with a lactose intolerance, but another thing to try is ghee, also known as clarified butter.
Butter is very low in lactose. For example, 1 cup (227 grams) of butter contains only 0.1 grams of lactose ( 1 ). For this reason, butter is well tolerated in most lactose-free diets. Only those who are highly sensitive to lactose may experience symptoms.
Different people have different lactose intolerances. I can eat cheese or butter, but milk will run right through me. From healthline.com;
Butter is very low in lactose.
For example, 1 cup (227 grams) of butter contains only 0.1 grams of lactose ( 1 ). For this reason, butter is well tolerated in most lactose-free diets. Only those who are highly sensitive to lactose may experience symptoms.
I have a really hard time with this whole thing, because I got told I'm lactose intolerance based on the results of an endoscope I underwent for (possibly) unrelated reasons. I didn't have (or at least didn't notice) any of the typical symptoms of lactose intolerance.
So I've cut out straight milk and cream, and only eat ice cream or milk/thick shakes with lactase tablets, but I still eat hard cheese the same as normal, as well as milk chocolate. And because I don't get the runs or anything like that, I don't really know if I should be eating the things I am.