Stopping skin to skin.

Hannah β€’ Hey my name is Hannah. I am a 27 yo SAHM πŸ’™πŸ‘ΆπŸ» πŸ’™4/29/16 πŸ’™πŸ‘ΆπŸ» πŸ’™4/23/18
When does skin to skin stop? My son is almost 4months old and every night before bed we do skin to skin for 15-20min. It's one of my favorite times of the day. People have been telling me he's too old for it and it upsets me. When did you stop skin to skin?Β