TORONTO -- Ontarians aged 80 and older became eligible to move up their second COVID-19 vaccinations on Monday, but securing an earlier appointment was a bit challenging in some health regions due to a lack of supply. The government announced last week that it would shorten the minimum interval between doses to just four weeks, starting with some of Ontario's oldest residents. Joyce Grant was able to move her mother’s second dose appointment up to June 5 from early July, but she couldn’t find an appointment in her Peterborough, Ont. where her mother lives and received her first dose. “They were like an hour and a half away,” she said.