Hi Darlene-
I don't have any advice for you, but my lo has been up the last 2 nights for more than 2 hours each time, so I can sympathize.
I've found WI/WO just upsets more, so I've started GW. I do WI/PD (if she doesn't fight me) and then I rub her head a little til she's calms. Then I place my hand on her back for a bit, then remove it and just stand by her crib.
Of course, this hasn't worked the past 2 nights for the 2 hour + wakings, but it has worked on other NWs.
My lo just cut her top 2 molars, so maybe it's teething but I'm leaning towards developmental.
I'm sending some sleep vibes your way,
Leslie