Oh my gosh.. this is exactally where we are at too. Ds is 22 months and we have been dealing with this for about 2 months now, I wish I could tell you that it will only last a few weeks.
Ds still does not pull down his own pants so I keep him nudey-bum while at home. We do have several days a week where we have no misses but we also have days where we have almost no catches. We are 100% on poops though!!
Anyway, not much advice here to offer, just understanding. Hopefully someone will have more advice.