It sounds so easy to do that, but it isn't. Building big leads in this league is as rare as any league in the country. The Big East is 31st out of 32 conferences in blowout percentage (> 19 point final margin). Just 4 of the 63 games have been decided by 20 points or more. Nearly every game is competitive.
Also, a big reason why we lose leads during a game is because we have the second unit guys in there (Ike, Nelson, Samuel, etc). Plus, that's just the nature of basketball. It's a game of runs. Cale has had ample time to show what he can or can't do.