0 to 1650 in 6 Weeks?

Haven't done the program, but I think it's completely realistic if you are dedicated to the plan.

Good luck!

Trust the plan and believe you can do it.  Just keep moving through the water by any means necessary.  I was in your swim suit (lol) 4 or 5 years ago and now it is easy. 

 I used to think 26.2 and 112 was a long way, but I started with a 5k and 20 mile goals for those.  Now, it is a time game...

haven't done the plan, but very doable IMO.  keep up it up.

I followed the same program and it's very attainable. Although, the first two weeks not drowning was really my primary concern.

worked great for me.  I spent probably 6 to 8 weeks swimming twice a week and swimming just a lap or two before spending minutes at the end resting.  Never made any real progress.  Started this plan and the first couple weeks were brutal! But I did what it said and pushed through and whatever week it had you swim 1000yards, the last day of that week, I just kept going and did my 1760(cause come on, 1650 just isn't really a mile!) Seems like once you get to a certain point you break though a bit, but those first few weeks are the toughest.  Plan works great though, just push through and you'll be swimming a mile in no time. 

Then everyone will tell you to stop swimming a strait mile and start working on sets and such...

I did it back when i started swimming and it worked.  I think by the 5th week I was able to swim 1600 with very little problem.  I do like how it builds your endurance slowly. 

Good luck. 

I've modified the program a bit but I like how it's structured.  It's given me a good base to work from.

I think it is very doable.

If you think in terms of time v distance, you're talking about going from a low estimate of 3 minutes to swim 100 yards. Then 6 minutes of swimming, then 12 minutes. Cardio-wise, very much within your reach.

When it stops being challenging, that means your body has adapted and it's time to change up your workout.

When I joined high school swim team (I had been swimming for 8 years by then), we had newbies whose first pool workout was 2x500 yard warmup. Granted, those were teens and presumably energetic, but some of them were not athletic at all. We always finished practice with a 500 cool-down, so 1500 just in warmup and cool-down. I think a 1650 goal is very attainable for anyone.

Good luck and happy laps!