One question I notice mothers of small children, asking frequently is "When should I start teaching my child about Islam?" I say, it's never to early! Start from birth saying 'Bismillah' aloud when you begin to feed your child; say other phrases such as 'alhamdu Lillah' upon sneezing or completing a meal and 'assalaamu alaikum'; pray in the presence of your child and so on.
My youngest daughter is 14 months old and now she will even pause from breastfeeding to say 'dandada' (alhamdu Lillah) with me if I sneeze and she always says it when she sneezes. She makes ruku' in front of me at salah times and now seems to be practising the juloos (sitting) position, masha'Allah.
Children are little sponges and readily soak up and copy all our good habits but beware because the opposite is also true!