Compared to the same time last year, fewer Belmont households are enrolled in the federally funded Supplemental Nutrition Assistance Program, commonly known as SNAP — but local food assistance advocates say the numbers don’t capture the reality of what’s happening in town. “I was talking to a friend who uses the [Belmont Food Pantry]. She goes when it opens. People are now lining up at 6 a.m., and she says that’s unusual,” said Merri Suzuki, food assistance manager for the…