Never used this before so will see how this goes...have a 4yr old who is generally very good...expecting 2nd in a couple of weeks. However 1st does not let Dad do any of the routine stuff eg feeding, bathing, night time reading stories...Especially bed times, He has a huge tantrem at the mention of it, we stick to our guns and turns out to be a massive shouting match between dad and child and i end up going in as referee, calming the situ down but still making sure dad then reads stories. Help?