Is 10 mins at one breast enough for each feeding?

Victoria • 29, married to a wonderful man, mother of 1, ttc #2.

11 days pp here, milk has come in and baby girl is pretty good at latching and sucking. But she'll only feed for maybe 10.mins at 1 breast then falls asleep

I try waking her up and putting her on the other breast but she won't wake up or open her mouth even when I Express milk onto her lips. I'm just worried she's not getting enough with that short time.