‏ losing motivation and discipline in studying

السلام عليكم ‏I have been struggling with a loss of motivation and zero discipline when it comes to studying .I’m in my 2nd year of uni and in just about 2 and a half weeks lgit bli drna 22 cours ( 2 per day) and I just couldn’t keep up ‏I know it is about the person bc you decide to study or not and honestly Ik that my lack of motivation probably comes from not liking my specialty (for now I have no choice but to stick with it) which I know isn’t right but fi koul el a7wal lazem n9raha,I can’t sit at my desk for more than 3 hours a day and I usually only manage to finish one or half a lesson but others can study for 5+ hours even tho I know some of them they don’t like this specialty too (ما شاء الله) ‏If anyone’s been through this before or knows how to handle it how can I actually stay focused and organize my study time better? I could really use some advice and thank you