Bro sir is now revising the part of 2nd year topics. In college,revision of fluids was completed.. So sir wouldn't upload classes on fluids right now,he might after the completion of 2nd year classes I believe.. And weightage of Fluids is less in JEE Mains. So you could leave fluids for the 1st session of JEE Mains. So don't worry about that..😄 Sir is very busy both at college and home..so he couldn't have seen your comment as he's working on the revision classes... Don't feel sad that sir didn't reply on your comment... Just prepare and revise your strong topics and make them stronger. All the best for your exam bro...😃