I usually feed one side, try to burp he doesn’t always burp then feed the other side and burp again. My little guy often falls asleep during feedings as well and wakes up fussy. I used mother’s milk tea and found that helped increase my milk supply. Also tried to feed frequently and used hand expression which eventually increased my supply. My little guy was eating small amounts frequently. Around 8 weeks my supply finally increased and now at 10 weeks I find most days he eats more less frequently
It is also common for babies to get fussier in the evenings. We went through a rough few weeks. We crush and steep fennel seeds and make a strong tea. We find that helps calm his stomach. Our little guy has a lot of gas and gets very upset
Yeah just burp him after every feed or in the middle of it if they need it