How would you want your SO to respond?

I’m needing relationship advice/insight! I’ve had a hard day today, juggling baby, emotions, the stress of Christmas events coming up and my boyfriend is working. I express I’m having a hard day and feeling a bit lonely and overwhelmed. He apologized for not being available today, I understand being busy but if the roles were switched I would be proactive about responding to his emotions and make time for him. Am I wrong to feel a little upset and sad that he didn’t know how to comfort me or make me a slight priority? What would you want your SO to do in this situation?