Newbie Workout Question

Hello all,

I am currently in the very beginning stages of fitting the Tri workouts into my schedule with the hope of doing some sprints this year, the first being in May.  I have found a really good 12 week program that I would like to do.  The one thing is I will most likely only have pool access on the weekends.  Some of these weeks in the workouts have 2 swim days.  Is it ok to slightly rearrange the week so I can do both swim workouts on Saturday and Sunday or is that going to screw up the whole balance of the program?  I swam competitively all through high school and part of college so I am not too concerned about technique.  Although that was about 15 years ago.  Any help would be appreciated and thanks in advance.

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