I have an 8 week old son and am exclusively breastfeeding and he is still not going longer than 3 hours between feeds during the night. I mentioned today to the nurse who was giving him his first jabs and she said how about trying formula feeding a night ... I really don't want to do this and just wondered if anyone had any tips for getting him to go longer between feeds - or is this just normal and I should persevere?!!! Thanks!