Callum has been struggling with his weight gain. He was born weighing 4lb 8oz, and is now 5lb 1oz, 6 weeks later. We have been topping up with a feeding tube, and he gains while we top up but not by huge amounts. He hasn't gained anything this week, even with 2x a day topups. He is feeding every 3-4 hours. The SCBU nurse is getting concerned now and has gone back to the hospital to discuss Callum with a doctor. He also has reflux. She said about formula today, which me and DH don't want to do. help