Hi Again
If you look at Question 1a) the answer is made up from letters from the first gift of the 12 Days of Christmas namely "A partridge in a Pear Tree"
Questions numbered 2a and 2b can be answered from the first and second gifts from the song. 2a letters for the answer are from " A Partridge in a Pear Tree and 2b) can be answered with letters from the second gift
Questions numbered 3a)b)c) can be answered from each of the first three gifts.
I found it easier to write next to the clue number the gift line where the letters for the answer will come from.
So for 1a,2a,3a, and all other a's the letters for the answer come from the first gift letters - so I wrote 1 (A partridge in a pear tree)
2b,3b,4b and all other b's the letters come from the second gift (turtle doves)
3c,4c and all other c's the answers use the letters from the 3rd gift (French Hens.)