Pumping when baby takes a bottle & concerned baby isn't getting enough

7 weeks postpartum today - I'm mostly breastfeeding but will pump so my husband has an opportunity to feed the baby. (Also give one bottle of formula at night, I pump then too!) How much should I be getting when I pump? Is there some sort of chart or rule of thumb I can refer to?

Also does anyone have any advice to help me understand if baby is getting enough when he eats from the breast? Most of the time he will eat himself to sleep and I always worry hes not getting enough.