Some analyst say that halving won't really affect the price much but the effect of halving will reduce the miners and adjust the difficulty resulting into small-time miners to mine again. The only reason why price increase is because people believe that it will increase in the time of halving so people buy which in turn increases the price. But still, it depends on the supply and demand of Litecoin.
They are wrong because halving actually affected price of Litecoin months ago, when LTC price rocketed to about 0.02
BTC per one Litecoin. Recent weeks, bitcoin dominated market and all altcoins have been in massacre. Litecoin, at its today price, has also nearly double its price from bottom in late days of 2018, so yes I do see effects of halving on Litecoin price. Litecoin's block rewards will halve in next few hours, and price already doubled.