Maybe introduce a white noise machine, makes baby sleepy and blocks out, outside noises

I heard putting a shirt that smells like u next to the baby swaddle in a warm blanket

My son was the same and now we even have a schedule! 2-3 naps and sleeps all night. I literally tire him out, play with him & take him outside. I don't let him cry to much but I put him down until I see he'll fall asleep right away. It took about a few weeks to get him to sleep for a long period. Now he takes a 20-30 min nap in the morning, for his noon nap he usually sleeps for 2-4 hours and sometimes takes like a 15 min one at 6.