What is the main conflict in The Life and Opinions of Tristram Shandy by Laurence Sterne?

The Life and Opinions of Tristram Shandy promises the life story of the fictional Tristram Shandy, but over nine volumes and with a number of digressions and narratives, the reader learns more about his family, and in particular his Uncle Toby and his father, than Tristram. The main characters swap such fanciful opinions and adventures that by the end, Tristram labels his epic story cock and bull.