That would mean he had bolt at age 15,which he didnt. So either Chap 700 takes place more than a decade later or bolt isnt 12.
Bolt is about 8.
Sarada is about the same age.
19+8=27
Naruto impregnated Hinata right after the Last.
Sasuke impregnated Sakura right after the last.
You don't need to be married to have kids you know.In fact, most of K11 elder children are in the same class.
Mass wedding is about to take place during / after "The Last Movie.."