Sure - if you can negtotiate cheaper rates for maintenance, fuel, insurance, rent, tax etc exclusively for when you use the aircraft...!
There's reasons it costs what it does to operate an aircraft. Not many flying schools have big margins to play with.
And good advice DON'T pay up front unless you can afford to lose it all! Some people give "discounts" for this but it can be because they can't get finance any other way, and/or are desperate for cash flow because they have little or no liquidity. Not an indicator of a healthy business. Hang on to your cash, earn some interest on it and pay as you go.