Honestly I don't think it's going to take all 3. As long as we don't lose to Luton and win one more we will be fine...that would be min 5pts difference v Luton with only 3 games to go for them.
to be mathematically certain, yes, we need to win those 3 games...but it's likely not going to take that.
of course, we don't look like winning ANY games right now!