How to regulate your periods after pregnancy?

I used to have a 28 day cycle before I gave birth to my almost 4 month old son. Does it look like my cycles is trying to become normal again? I’m not on birth control and I’m not breastfeeding. My first period was 4-25-22 to 5-7-22. My second period was 5-15-22 to 5-21-22. My third period was 5-31-22 to 6-6-22. My fourth period was 6-22-22