Welcome to PC aditya. It sounds like you have good intentions but your schedule sounds too ambitious and is probably dragging you down. Having a study schedule is a good start but intending to study 10-12 hours a day is unreasonable.

Here is what worked for me in college: look at the project you need to work on or the exam you are studying for and then set aside 15 minutes and work on it. See how much of it you finished. At this point you will have some idea of how long it will take you to complete the project or study for a particular exam and you can budget your time in short segments with an end goal in mind and not feel so overwhelmed.

Keep it simple and small initially. You don't have to be perfect ... just good.