M.V.
I would not put him back in pull ups, if he lasted a week he can last longer. If he wets it also might be early in the morning....do either one of you wake up early and leave for work? My husband is up at 4 am and he takes my son before he leaves, and we have not had any more issues. (And my son in the 6 months of us doing this, has woken up on his own to the bathroom maybe twice)
I was going crazy with washing sheets, so we put the crib mattress pad with a towel back on his bed. He'll get the hang of it.