My 8 month old son refuses to eat any solids: purees or finger food. He clamps his lips closed & refuses anything (veg, meat, blends, finger food). On the rare occasion he allows anything past his lips he has a strong gag reflex and just throws it all up again. The only exception is baby porridge and apple/pear. That's all he'll take & then even only 1/2 an ice-cube's worth a day. Should I be worried? He loves his milk (formula), but his weight's platoed. Any tips/advice appreciated. Thanks!