Is she satisfied after one breast? If you are going to offer the second side, I would make sure she has completly emptied the first side so she gets all the hind milk, otherwise she will be getting a double dose of foremilk and not the good stuff. 8-10 minutes is not unusual for a feed. See
https://babywhispererforums.com/index.php?topic=65904.0 for more details.
Are you concerned about weight gain? Is she producing 6 wet diapers in 24 hours? Is she content and satisfied. You may find she needs both sides, but again, please make sure she is empyting the first side.
The df won't change, just offer the other side, or maybe she only needs one side for the df. I found that my left side was a better producer for dd and If I started on the right, I would have to offer the left as well. But, if I started on left, she didn't need more. Hope that made sense.
HTH, let us know how it goes
