I understand your concern, but please do not start any new medications or repeat the antibiotic (cefixime) without a doctor's consultation. Chronic loose motions lasting a month require a proper evaluation by a paediatrician to find the exact cause, which could be post-infectious lactose intolerance or a different underlying issue. For now, focus on keeping your baby well-hydrated. Offer Oral Rehydration Salts (ORS) after every loose stool, and continue regular feeding. Please visit your paediatrician soon; they may recommend a simple stool test and prescribe appropriate treatment like zinc supplements or probiotics to help her recover safely.