good weight gain

we had Lewis weighed today, 1st time in a month, he has gained 1lb 6oz in that time which as most of you will know is HUGE for a CDH'er, it's also pushed him up to the next percentile yay, health visitor is very happy with him, commenting on how advanced he is as well which is great as we thought it was just us who thought that lol,
so the only downfall with the weight gain is that hes halfway into the next KG which means he needs his calories intake upped quite a bit, which is bad news because he won't tolerate so much and so we're going to end up with the mega bad reflux again, therefore weight loss, argh i've found my own way of controlling his reflux with the way he gets his feeds etc, just don't know what i'm going to do now, he's already on as much as he can tolerate and without going back to THREE HOURLY feeds i can't see another way at the minute, wish the date for his nissen fundo would hurry up and come through we've been waiting nearly 2 months :s