Question for the PAT.

I have a PAT scheduled for next month. I’ve slowly been training. My biggest thing to over come would be the mile and a half. I’ve been running at 5.5/6.5 speed for about 2 minutes on the treadmill then I need to take like a 20 second breather. My timing with the breathers has me completing the full 1.5 in the allotted time. My concern is that most departments want a nonstop 1.5. Like I can’t go full sprint/ speed walk for 10-15 seconds / full sprint. Would this be grounds for disqualification?
Any advice in your experiences during the PAT?