Girls, can you tell me how to be? The baby is almost a month old, and …

Girls, can you tell me how to be? The baby is almost a month old, and every day something goes wrong. First, there were bitten nipples that I treated, then fed through pain, then started expressing and giving the baby expressed milk, but it exhausted me morally. Milk first flowed like a river, then started expressing and the milk became less, had to express two breasts at once, it took about an hour. And it turned out to feed the baby, express and feed again. Then I seemed to have healed my nipples, afraid that the breast wouldn't take hold, but everything went well. But then mastitis began, and the temperature was 39. After a few days,