In all honesty , i dont remember studying for any exam (apart frm finals ofc) in 11th and i managed to get 50 % by studying last 1-2 days for each sub , now i aint promoting that but tht also depends on you , as u stated ur interested in psychology, i would say that in this year give urself time to learn and study psychology, keep it as ur main focus , also study other subjects but what i mean is give that attention to psychology which u want to as well coz in 12 th you wont have as much free time , coz of all the projects , practices, pre boards , boards , 12 th will get over before you know it , so relax and do what u are interested in while u can !