Instead of studying nonstop for two hours, it may be better to break the time into sessions of from 25 to 40 minutes each, with short intervals of a few minutes in between.
Labāk ir tad, ja tu sadali šo laiku 25 līdz 40 minūšu intervālos ar pāris minūšu starplaikiem, nevis studē divas stundas no vietas.