Input Not Claimed from Apr-18 to Nov. in 18

Yes, you can claim the input credit in Dec/Jan GSTR3B

ITC can be claimed only within one year from the date of issue of tax invoice relating to supply. In any other case, the last date to claim ITC is earlier of the two below:

Before the filing of valid return for the month of September following the end of FY to which such invoice is related, or Before the filing of the annual return.