Ah that lovely stage!...... My older 3 did grow out of it, but I don't remember how long it took. I think I used to play games with them (tickle cheeks, smile, talk) to keep them looking at me. My DD was the worst for taking nipple with her. It surprised me just much a nipple can stretch!

If it makes you feel better my 11 week old is starting the distracted stage already (well I suppose he has 3 older siblings to watch.)