Schools/colleges receive 75% funding for year 14 students. So it isn’t the norm to give a restart.
Having said that, y14s struggle with feeling like they’ve out grown the setting/rules/institution and attendance etc can be a real issue. Restarting is generally successful when there was a major issue in y12 that has since been addressed/sorted e.g rehousing, bereavement, illness. It doesn’t resolve a poor attitude.
Did he literally take 2 months out? What was going on with him? What did school do in this time?
70% would require considerable effort to recoup lost ground/content. what kind of grades has he finished on? Did he perform well on the content he was in school for?
Has he had career appointments? Work experience? Has he got any sense of a goal?
Lots of questions but am interested to know as answers build better picture about what might work - there’s always a way through. Life’s a journey 👍