I went to attend a talk for 2-4 mth bb last week and the nurse said that the most accurate one was 肛探, I therefore bought 探肛針 for this. Actually, I have not yet measured the temp. of my bb from his born.
Funny,
My bb started having less "poo poo" when feeding more formula milk and less breast feed. Around 1 poo daily. Sometimes, once in 2 days. If so, the volume would be much more. As far as the texture is still soft, it should be OK. However, my mum still ask me to feed him more water.