Poor baby.. And mom! What have the culture results shown, do they know what's causing the infections? DS got off to a rough start -- was in the hospital for the first 6 weeks. Seemed like he'd be on iv abx for two weeks, they'd get ready to send him home and he'd get sick again. Finally they kept him on iv abx a few days longer and that did the trick. They weren't sure if he had an infection in his broviac (central line), problems with his intestinal tract (he was in the hospital for a bowel obstruction).
Hopefully they can figure your little guy out soon!