When you get a starter of friendship bread you do nothing on day one. Days 2 thru days 5 all you do is mush the bag. Normal to rise and ferment. Burp as needed
On day 6 you add to starter bag 1 cup flour, 1 cup sugar, 1 cup milk. Mush the bag. On days 6 thru 9 mush the bag.
On day 10: Add 1 1/2 cups flour, 1 1/2 cups sugar, and 1 1/2 cups milk in a non metal bowl mix well with non metal spoon.