Girls, several questions in one. 1. Eating for 20-30 minutes breaks…

Girls, several questions in one. 1. Eating for 20-30 minutes breaks between feedings from two to four hours, is this normal? 2. Practically always after eating immediately full diaper, is this also considered normal? 3. After eating does it necessarily spit up a little milk, is this normal? I'm asking here because there is a lot of contradictory information online.