I have been studying since mid JUne for the LSAt and I'm pretty tired of the damn thing. Can barely force myself to finisha diagnostic. So what I do now is just ahve maybe 3 study sessions a week around 3-6 hours each. I make them long to excercise my stamina.
Also, i do not reccomend you start studying for the LSAt next year now, study maybe5 months tops from the actual tests, simply because if you start studying now and you study hard you will run out of materials pretty soon.