Re: We did it! We took our 3 week old sailing today!
We also took ours out when she was 2 weeks old. Wanted to go earlier but the wife needed a little more time to recover from the C-Section. We did a few overnight trips with her when she was around 1. It was much easier then. She was able to sail all day and did not want to get up and run around. Now, at almost 3 she loves the boat, but is unwilling to sleep when underway. I think it is FOMA (Fear of Missing Anything). So we do very short trips (2 hours max) now. She is very interested in steering the boat and "helping" raise the sails.
Each new stage brings new surprises and learning experiences for the parents. Enjoy the stage you are in and don't worry too much about the next one. You will figure out what works best.