J.P.
My son was doing the same thing. I had read that boys have a hard time making it through the night and that it's likely that they won't master potty training at night for many years. However, after getting fed up with pull ups and wet sheets we decided to try an incentive. For each night he went without an accident, he got a sticker to put on a chart on his door. He loved to pick the sticker and it worked to make him more conscious at night of when he needed to use the bathroom. We also cut off any drinks after dinner. Hope this helps!