The most common and most likely answer to this crossword clue is the 14 letter word OVERPROTECTIVE
I've seen this crossword clue in The Times
O
V
E
R
P
R
O
T
E
C
T
I
V
E
Buddy explains!

The straight part
We know that "Caring too much" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case caring too much = overprotective.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OVERPROTECTIVE mean?
OVERPROTECTIVE adjective- Excessively protective, wanting to give too much protection (especially to children)