Starting your back-to-school shopping before more tariffs hit? You may not save by going early

Open this photo in gallery: Many Canadian parents expect to spend more on back-to-school shopping this year.Cristina Gaidau/Getty Images Mila Olumogba has fine-tuned her back-to-school shopping routine over the years. The mother of three from Gatineau scours off-season bargains to spread out costs, buys clothes one size up to fit in August and always checks her cupboards first. This year, she's also been trying to shop more locally in light of Canada's trade war with the United States and President Donald Trump's tariff threats, including sweeping levies as high as 35 per cent on Canadian imports starting in August. But…