Timing contractions

My wife is 39 weeks tomorrow. She's been having contractions almost all day, but not within the 5-1-1 rule. It started off around 15-20 mins apart earlier. Now they're coming in 5-8 minutes a part.
Is it likely she'll reach 5-1-1 tonight? Or is it also likely that they may go away?
Never been so excited to see my wife in pain 😂 Only saying that because I'm hoping she goes in labor soon!!