Sleeping longer at night

Sasha
My LO is 8 weeks old and is at best sleeping one 4 hour chunk at night following anywhere between 1 and 3 hour sleep spurts. I hear so many women saying their LO sleeps through the night and I'm wondering what your secrets are! He sleeps with white noise in his crib usually swaddled with his door closed and the lamp on the low setting. Any sugestions are welcomed I miss sleep!!