If you really want to earn fast bitcoin you can transfer at BTC, but it totally depends on you because that's your investment but if you have the patience to wait and have the will that LTC will increase in the future then just wait for it. When investing you need to be patient and understand that it is not going to be all the time that you will earn that's why when you invest there are risks just like in gambling but in investing you can see your money grow each time, patience is they key. In the end it totally depends on you, if it was me I will just wait until the price will increase again in LTC than moving to BTC, I would just invest different money for BTC and wait till LTC increases again.