Hungry Baby


Our baby just turned 2 weeks old today and we have been feeding her 3oz of formula every 3 hours or 2oz formula with 1oz breast milk (I'm just not producing much) as instructed by the pediatrician. The past two days she seems extremely hungry and gets inconsolable after 2 hrs and shows the signs of hunger but we don't want to over feed her because sometimes she spits up after an early feeding. Any suggestions?