Help on napping

Layla

Ladies I need some help. My little boy is 4 months now. He had really bad colic in the beginning it’s gotten so much better but now we’re on to another difficultly. To sooth him during the colic we did a lot of rocking breastfeeding and swings. Well now to get him to nap it’s hell he will cry or scream. How can I help him self sooth with out the rocking and swings. He literally just screams when he’s tired unless rocked.