Hazel, go to
www.jimhumble.biz and look on the right hand side for the protocols - there will be a video under the protocol 1000/2000 link, showing you how to mix a full day's dose.
I'm not sure what you're dealing with, but unless it's life threatening, best to hang out at 3 drops an hour - the important part is not the 24 drops, but the constant low dose over the 8 hours.
I'm guessing (since I haven't tried it) that DMSO might irritate the vaginal tissues - You can certainly use MMS in that area - I use the skin spray (which is 10 drops activated for an ounce of water) in that area with no problems. I would use a different formulation for a douche, but for the external area, I've found the skin spray to be very effective -