Hmmm, I haven't read either of the ones that you mention, but here is a manga that kind of focuses around a single dad:
http://www.mangago.me/read-manga/romance_papa/
Hope that help!
My child (Sahara Mizu)
I only put in BL mangas here tho hope you don't mind
http://www.mangago.me/home/mangalist/24154/?filter=&page=1
I have recently gotten into manga that involve a single dad.
I love when the dad is also so chilled.
So, I'm looking for a manga that is like Love life or Yotsubato