A 7 days old neonate having fever since day 1. Baby is clinically stable accepting breast feed. Her CRP is positive TLC on day 4 -25500. On day 7 -13000. Baby is on inj. ampicillin, inj.

amikacin, inj. ceftriaxone added, after no response to inj. ampicillin and inj. amikacin. Her temp reaches 101-102 once or twice in 24 hrs. How to approach for further treatment?