Backtest period limit in streak

Hello,
If i want to test a strategy on a period of 1 year on 3 min candle but a maximum limit is 1 month for a strategy to be backtested.
So How could I test my strategy for upto one year?

To test your strategy for 1 year, hop on to Kuants. Ask for a demo. They provide 1.5 year for backtest data at 1 minute frequency!!