It is Best of 3. The schedule is unique.
First game is on Tuesday.
Second game is on Saturday.
Third game, if necessary, is on Sunday
If you should play the 3rd game, both the 2nd and 3rd game will count for training for next week. But nobody plays on the following Tuesday (May 6), so you will at most have 3 games for training (including a scrimmage on Thursday, May 8).