3 month old sleep through the night

Hello everyone. My baby is 11 weeks old so very close to 3 months. She sleeps so good already. She goes to bed around 8pm with the same routine every night. We can lay her in her bassinet and she will put herself to sleep within a few minutes. She will stay asleep 6 hours consistently. Then wakes for a 10-15 minute feed and goes right back down for 2-4 hours. But I’m curious how I can get that stretch a little longer? Or should I be grateful for what she’s doing now! She uses a sleep sack every night. I stopped swaddling at 5 weeks and she didn’t care!