pacifier???

Sarah • Proud mommy of Lucas Alan <3

My MIL is pretty insistent that he should have a pacifier and that it will help him to be calm. He is becoming fussy and crying more often. He will be 4 weeks old tomorrow and hasn't had a bottle or a pacifier. I thought maybe just at night or nap time it might be permissible? I have also read that it might reduce the risk of SIDS. How old is old enough? OR should I avoid it all together? I don't want him to dislike breastfeeding :(