hello! i am six weeks into this mama thing and i have some lingering questions that i can't seem to get rid of, so i thought i'd come here for some help!

the biggest:
how do you know if your little one is getting enough, beyond diapers and weight gain? can you rely on lack of hunger cues, for example? my little guy usually eats very quickly - as in, 5-7 minutes - through usually 2-3 let downs and rarely takes the other boob. he often gets fussy at the boob after a burping as well, and won't go back on. today he went 4 hours between feeds for the first time, and this was after only eating on one side for that short period of time.

when i pump, i tend to get a good number of ounces, fast. typically, between 5-9 after only pumping for about ten minutes. is this a sign that he is likely getting all he needs in that 5 minutes/3 let downs and i just need to chill out?

blerg, so many doubts and questions. any experiences or thoughts welcome! thank you in advance!