Hi my little one was being mixed fed via bottle until 6 months. I have now stopped expressing and now solely formula feeding. He is now 8 months old. He has still been on first milk since weaning and I know there is no need to move onto follow on milk (marketing thing etc) but is there any reason not to move to stage 2 as i often see it on offer/ it works out slightly cheaper? I tried to google but the only info seems to tell me it isn’t necessary to move on but that doesn’t really answer my question.