Possible Clues:

• New brother or sister
• Period in religious life before final vows are taken
• Not out to spoil new recruit
• At first it was what I was given to eat at the end of November
• Probationary period in order to turn on pervert?
• Small number undermine newcomer in convent
• Polish first-class verse
• For starters, at the start of the month, got it up and swallowed it
• After a month that's the thing I swallowed for starters
• After the first of the month, that's how little tea I ate for a start