DS is 11 weeks. I've noticed that I hardly talk to him. I'm always so busy with DD (3yo), who is such a chatterbox and so demanding of my full attention, that when I have 1:1 moments with DS (nappy changes, feeds etc), I find I'm retreating into my own thoughts and don't talk to him. We have little cooing/ turn taking 'talking' sessions together a few times a day, when dd gives us a chance.
I remember talking to DD all the time. Poor baby DS.