First, let's get a few things clear. Despite how irrational some fans are 1) Prohm is not going anywhere this year unless he decides to leave voluntarily, and 2) ISU will make the tournament regardless of what happens now until Selection Sunday.
Second, this is a not too uncommon position for a team to end the regular season poorly (due to chemistry, injuries, fatigue, luck, etc.) and then still have a successful postseason. This "peaking" at the right time narrative is not causal to a successful postseason. Some recent examples are:
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There are plenty examples of teams also crashing and burning to close out a season, but "it is not over until it is over".
Lots to learn about this program over the next few games and weeks.