I've had to give Ceftazidime aka Fortaz to Harley and Rosey and neither would eat while on it. First and only time Rosey ever declined a meal. So i wouldnt be surprised if Yafe doesnt want to eat. Pretty much any antibiotic is rough for reptiles. Also Fortaz gave Rosey the runs for a few poops.
You can try to offer food but if not interested, i wouldnt bug him with it.