Just read your second post.
Yes, the points are correct. It is the date of the offences which count for totting purposes, not the date of convictions. So, in chronological order of offences, your husband committed an offence which took him to twelve points. The points revert to zero with the totting ban and the next offence adds three points (these cannot be part of his total which reverts to zero as he had not committed that offence when he had accumulated 12 points).
Still don't understand the �120, though.