Hi there, EBF Mom here.
Does your baby stop after 10 min or do you unlatch? Best is to let baby latched on and have as much as he/she wants. You can alternate the breasts at each feeding rather than switching the side during same feed. It'll help baby empty the breast fully and get the richer hind milk (one of the best advices I received). If baby is still hungry after your breast is empty (light), you can offer other breast.
Direct latching always produces more than pumping so that's not a fair comparison.
If your baby seems content, gaining weight as intended and producing enough wet/dirty diapers per day, there's no need to worry as it indicates baby is getting enough food.