Pm suman is different from pmsma. Under pm suman you have pmsma plus some other benefits includes like forst trimester care, eligibility till 6 months post partum etc. But in pmsma only 2 n 3 trimester are mentioned.
https://pmsma.mohfw.gov.in/ Check this site, the sentence has been lifted from here and then 6 months detail has been added possibly to make it wrong.
https://www.myscheme.gov.in/schemes/suman Here in first para it is written, some check ups are in first trimested and rest under pmsma. So I think they are two different things and pmsma doesnt have 6 months post delivery feature. The names are slightly different which is not discernible in short form.
This is what i understood after seeing your query and checking the two sites.
