Looking for the INDEX of 1st and 2nd largest values of a give MONTH

hi,

I am struggling with formula to return the index of 1st largest and 2nd largest value of given month.

I'm using this array formula to get 1^st and 2^nd largest values

Formula:

={LARGE(IF(B1:M1=O1,B2:M13),1)}

and this formula to get the index of

Formula:

=IF(Q2<>0,IF(LEN(Q2),INDEX($A$2:$A$13,SMALL(IF(B$2:M$13=Q2,ROW($1:$12)),COUNTIF(Q$2:Q2,Q2))),""),"")

but this formula is not return correct index of 1st and 2nd largest values from given month.

If you change month to
JAN: its returning 1^st largest value as 'product2' from column D , But it should return 'product8' which is 13 from column B i.e. JAN
FEB: it is returning 1^st largest value as 'product3 from column B i.e. JAN month, but it should return 'product5' which is 11 from column C i.e. FEB
and so on...

I'm attaching file for better understanding...

Thanks!