As it has been discussed several times, supply is not the only factor to move the price sometimes, even if the supply is limited, the price will remain constant. Therefore, LTC block reward halving is a variable in supply, not demand.
Demand may increase in the short term, but I bet it will not last for more than 6 months, and then halving will not have an effect.
Of course. I wouldn't expect LTC to retain high prices for long because of the low demand. Investors prefer other coins with shiny-new features. Especially coins with smart contract capabilities. Nowadays, it's all about NFTs and "meme" coins. While LTC has Oedinals inscriptions (NFTs), it's certainly not enough to lure the attention of serious investors in the crypto/Blockchain space.
The upcoming halving is just a week away, so I'd take advantage of the short "pump" to sell my coins for a profit. Once the dust settles, you can buy more coins to prepare yourself for the next block reward halving. Rinse and repeat. Who knows if developers start building useful apps on top of the LTC blockchain soon? Just my thoughts