Wrote this for my best friend based on a text message conversation
"Yeah – just like that – make sure to support his head-"
"John, I am aware of the correct way to hold a baby." Sherlock interrupted John's worrying as he cradled the baby boy in his arms. John couldn't help but hover as the consulting detective held their son.
After a few minutes of watching them, John decided it was safe enough to go and make himself a cup of coffee, it would have been tea but their son decided sleeping at regular hours was not a good idea.
As he waited for the coffee to be done he would peek around the corner at Sherlock, still standing by the window, looking at Hamish.
Just as he ducked back into the kitchen to take the now steaming cup from the coffee maker he heard Hamish squeak then Sherlock's deep voice.
"John? John! Help!" John turned the coffee maker off and walked back into the living room to see a frazzled Sherlock and a squirming baby. "Take him, take him! Please-" John chuckled as he gently took Hamish from Sherlock's arms and rocked back and forth. Sighing, he said:
"You're going to have to be able to do this eventually, I can't come to your rescue every time" After a moment of rocking and gentle (in Sherlock's opinion ridiculous) cooing Hamish stopped squirming and settled in John's arms. "He was just a little fussy, that's all. Now take him back and give me a moment to enjoy my coffee. If he's fussy again you deal with him for the time being, okay? It's your turn." and in a moment Hamish was back in Sherlock's arms and John's hands were back around his delicious cup of coffee