Johnson shared a photo of himself spoon feeding Hashian as she cradled Tia, with the caption: "I'll handle this business 😉💪🏾
"So much respect to her and all mamas out there holding it down and running things."
Johnson played up the chivalrous nature of his gesture by getting down on one knee and poking fun at himself with the hashtag #ChivalryIsToughOnTheKnees.
Mums commented on the photo to share their own experience of just how time-consuming feeding a baby can be. One wrote: "From one breastfeeding mama to another... I remember those times well, now I manage to get some food between times, teamwork."
While another shared the photo with her partner and wrote: "Do you remember doing this for me?! Seems so long ago now doesn't it!"
Johnson also has a 16-year-old daughter Simone from a previous marriage and two-year-old Jasmine with Lauren. The couple announced Tia's birth in April, and we've noticed she's already got an eye for the camera.