When looking at serie a records : fewest goals conceded in a season :
30 games : Cagliari '60-'70: 11 goals (equivalent 13.93 in 38 games)
34 games : Milan : 15 goals (quite insane tbh, late serie a prime) (equivalent 16.7 in 38 games)
38 games : Juventus '11-'12: 20 goals (Conte season 1)
If we concede less then 2 goals the comming games, Allegri is taking over Conte's record.