Hi, hoping someone might have been in a similar position and can advise. My son was on lactose free formula from 4weeks to 12 weeks. He was constipated for days had a swollen belly and was having one nappy every 3 days - a hard green ball of poop. He was struggling to pass them. We have changed to kendamil organic from 13 weeks but now he has a runny yellow squirt nappy after every bottle and his tummy is not bloated but it also makes me worry he has lost weight. Is this normal? Is the hard to pass green lump better than the 6-8 dirty yellow small runny nappies? He was sleeping through the night on lactose free but wakes now for a feed and nappy change on kendamil. I am in with nurse in 2 weeks but just wanted some advice until I get into her. Many thanks.