Lymph node tuberculosis in neck. Again.

My brother who is 21 year old just used to get fever from long time then we done with check up with doctor ,also there was one node on his neck ,after checkup it was found he has TB in neck .So his treatement was done in government hospital where they just give him - rifampicin to take on daily basis 6 tablets and they just call him after 6 months .Between treatment also 1-2 times they called but they just ask him to continue with this course only After 6 month they ask for proper check in which the size of lymph node was found to be reduced to 29mm from 43 mm in 6 month course then doctors advice to continue the same dose for 1 more month and after that they didnt ask for any check nothing and just stopped the treatment without any checkup So i want to know is it fine to stop this treatment without further checkups if the node decreases or not ,or the infections still there or not. or we should go for all the proper checkups again .