Hi Dipak,

You can go through these channels on Youtube, called:-

1)"New Era Online Coaching"

2)"Vedantu"

i found these two channels a good one. Out of these Vedantu has a more organised study plan. They have around 13-14 videos each on Physics, Chemistry and Mathematics covering almost all topics. you can check both and follow any link whichever you feel better.

You can also do one thing i.e. just type topics on youtube and then study different topics from diferent channels which helps out sometimes. 

Hey Dipak.

See there are no such best study channel for the JEE ADVANCED. Every channel provides it's best faculty study in their videos for the benefit of the student. U should be just typing the topic u want to study and approach for the most viewed video for the assistance. In this crucial time of the exam u should be practicing the unsloved papers for the best time management.

Hope u got ur point. Ask if any query.

Good luck