After 1st 3 days chemo, platelet and tlc level goes to 12000 and 200 respectively and it takes more than 21 days to recover. does 2nd chemo advisable?

Up to MD: We USUALLY wait until platelets are at least 50K and Neutrophil count is more than 1K but there are exceptions to this: such as with very aggressive cancers such as leukemia. The lymphocyte count is less important than the neutrophil count when it comes to preventing infections. There are also many other factors that are important to consider, such as how you are feeling. Please discuss w your onc