Leading to the question— Do you see a bullish trend as a result of the coming halving event?
It is likely that the situation will be the same as with the bitcoin halving - bulls will follow with time. Just like you said - the impact won't be immediate, but it might take a lot of time to see the progress. After all the price of LTC is also affected by rising bitcoin prices - so it will still have something to do with it instead of just the LTC halving itself.
If you believe LTC is very likely to be in a bull market after next year's halving - then take your chance now just like you took your chance with bitcoin. LTC can also earn you returns - but do so at your own risk.