Cooking at Altitude

Hey,
We live at 10,000 feet. I have a very good butter recipe, but was wondering if I should make any adjustments to a recipe that already calls for 9 cups of flour. (recipe is for pumpkin bread and makes 4-6 loaves depending on the size of the loaf) Usually for any other recipe you only need to add one or two teaspoons more of flour to help it rise. Since there is so much in it, any suggestions?

I also am trying the recipe without cannabis first to see how it turns out.

Hey actually my first post, but I live at about 9500 ft. I would add more - I think the 2 tbsp thing is for a smaller 1-2 loaf batch. Also I would google it as some recipes you add more flower and a little water to even it out. I've even heard of less sugar and different amounts of baking soda/powder. Probably just more flour and a little water to get the right consistency though.