"We don't think you're a coward," Tidus states firmly, yet fondly too; like a parent reassuring their child. "A fish walking around on land would think it's weird too. But you're doing it! Just keeping going like this for another minute or two."

A minute of treading in place, just to get more accustomed, a little more confident. Then they could try a few other exercises, slow and easy. This won't be so bad once Inigo does it more, will it? Tidus will just have to shut up and let him get to it so he can't get discouraged by overthinking everything.