Baby making alot of noises and cannot fall back to sleep at the same time of the night

My 6 weeks old baby is fully breastfed. She has no issue drinking and falling back asleep from her night routine. But every dingle day after her last feed at 5am, despite being tired, she will just keep making alot of sounds even though i have burp her, change her diaper, rub her tummy to clear the air, checking the temperature of room, swaddle her, She can just make the sounds all the way till sun rise. I cannot even go back to sleep 😭 any advice ! Thanks !