A lot of Breasfteeding questions

Dear all,

I just gave birth 20 days ago to my 2nd daughter. i managed to bfeed my 1st daughter only until 4 month coz i was so stressed out. During my 1st 3 month i wws with my family then the month after i went back to indonesia bcause my husband works there then i notice my milk supply drop once im there.

So for my 2nd pregnancy i really want to try bfeed for at least 1 year. But this is only 20 days and i dont understand what is happening. I did ask for consultation last week. But i think i just want to ask here too. Coz i dnt want to meet the consulatation during this covid times

1) how do i know if the baby is getting enough milk? She drinks 5-10mins then sleep for 2 to 3h.

2) she prefers my left breast more. Is it normal?

3) what do u usually do if u feel breast engorge? I try to pump it out. But i only 5mins then the milk doesnt want to come out. The consultant ask to pump 20mins each.

4) if the milk doesnt come out. Keep pumping til 20mins?

5) sometimes i pump only one side breast come out milk. What is happening. Sometimes just left sometimes just right eventhough baby doesnt drink for 3h

6) i feel like the baby feel frustrated sometimes when drinking milk. Issit bcause not enough milk? Bcause i do press out still got milk

7) everytime she feels frustrated i feel frustrated too 😩 then she go to sleep. So does that mean shes drinking enough?

8) do u burp ur baby after feeding?

Thank you for answering. I think i have more questions but i dnt remember now. Ill continue later