Actually my 99 also trained my BB to poop when he was 2months old. After around 1 month, my BB knows when he needs to poop, he will cry or make some sounds representing he wants to poop. He is 5.5months old now.
But about vv.....hmm....i think it is too early la. pee in the diaper is alright...as the diaper will absorb the vv ma...
anyway, i feel ok about my son no need to poop in diaper. I think it is cleaner....