I have twin boys as well. Mine just turned 6. I was reading this forum because one of my guys is still having issues at night. Both guys were potty-trained at around 4 years old. The "older" twin pretty much did it himself. I had tried several times before suggesting potty training to them - but they just weren't interested. I asked our (wonderful!) pediatrician and he said the most important thing when potty training is to not rush it because you will make many more problems for the kids. I guess I let them tell me when they were ready. Again, every so often I would ask them if they thought they might be ready to try. I got very matter-of-fact "no's". I also got a lot of grief from the grandparents. My advice for this - ignore the grandparents and trust the pediatrician with the medical degree. I did - and it has worked out very well. The "younger" twin waited another couple of months to be interested in potty training - but when it was his time it was effortless.

As far as your little guy who wants to potty train at night. I would just keep putting pullups on until he is completely dry every morning for one straight week. That is the milestone that we set for our older guy - and it builds a lot of confidence when that pullup is dry in the morning. If during the week he wakes up wet - the week starts over. We just made a big deal out of how many days our guys did stay dry - and then we put that as our goal - to do one more day than the last try. I think all these moms have great advice - if you make a big deal out of it so will they - if you act like it is okay no matter what happens - then there will be no issues.

Godspeed to you in your potty training efforts - and congratulations on having twins!

Shelly