According to the Oxford Advanced Learner's Dictionary, 'little' as an adverb could mean:
not much; only slightly
Is there a preference among these sentences?
- He little helped his friends.
- He helped little his friends.
- He helped his friends little.
According to the Oxford Advanced Learner's Dictionary, 'little' as an adverb could mean:
not much; only slightly
Is there a preference among these sentences?
- He little helped his friends.
- He helped little his friends.
- He helped his friends little.
Tennyson writes
It little profits that an idle king...
So your first sentence is not an unheard of construction.
He little helps his friends.
This gives the suggestion that he provides help infrequently. It also sounds formal and literary.
He helps little his friends.
This sentence sounds like he's trying to make his friends smaller.
He helps his friends little.
This sentence could mean infrequently; it also sounds like he's just generally not of much help. It is less formal-sounding too.
This last one, I think we've all agreed, is probably the most common way of expressing what you are trying to say, although gmcgath is right in the comments, where he says that
He helps his friends very little.
is more usual.
Bare little, as an adverb, is uncommon in US speech; it’s been largely replaced by not much.
You will encounter it more often in written discourse of a fairly formal register. There is a distinct preference for placing it immediately before the word it modifies:
It’s most comfortably accommodated in sentence-initial or -final position:
I suspect that what’s involved in all of these is conflict with the more frequent use of bare little as an adjective or noun, and of a little as an adverb with a slightly different sense. To avoid arresting the flow we have come to shy away from placing bare little in positions where any of these might be in play.
You have to use it with a, as in the second definition in the Advanced Learners Dictionary: “He helped his friends a little.”
I agree with Peter Shor in the comments.
Little without being preceded by a would mean almost none. I had little money in my account = I had almost no money in my account.
So, He helped his friends little would give the sense you are looking for.
I might also add that the same rule goes with few and a few.
Few women have led troops in battle. (Almost none)
A few women have led troops in battle. (Some)