Feeding related

Hi mummies. My baby was born premature, he’s 3 month now (following from birth date). Corrected age should be coming 2 months. His feeding has recently been increased to 120ml. He is drinking well and not vomiting or anything but gets hungry quite often, sometimes before 3hr. Is this normal or something i should be concern of? Im only afraid that i might overfeed him. TIA!