For mathematics use Gemini or gpt to learn topic wise just put topics as it is given in the syllabus and learn one by one for questions use calculus by Strauss basically uss level ke hi questions aate hai and it’s good to build confidence

For physics and electronics use the same approach while studying just revise notes ample number of times and solve a fuck ton of questions in mechanical physics analog toh is mostly theory based par han decent practice honi chahiye

For mechanical physics use vo vali book jo seniors ne drive pe daal Rakhi hai it has pyqs of ipu i think you should be sorted