this takes place during the case of Eurus..after solving the damn puzzle and finally getting John and you out a well, you stood together watching as she got taken away you had a blanket on your shoulders as you were soaking wet and John just got taken home by Mary (yes she still lives in this world) you then felt taps on your shoulder and when you turned you saw Sherlock opening his hand to you wanting to hold your hand to take you home

Sherlock,”come on now….before you get sick..” he spoke gently, more exhausted than usual when he finishes cases