Hello,
Please do remember that usually fever is an indication of infection (not always,but more often than not.)
In your case, you have TB and the infection won't go away that quickly.
Please persist with the DOTS therapy.
The temperature range you have provided falls in the normal bracket and no, it doesn't mean treatment failure.
Tc
Next Steps
Please DO NOT STOP THE TREATMENT!
can't stress this enough, If in doubt please visit your treating doctor.
Tc