Ds is 7 weeks old tomorrow. He's drinking 5oz every 3 hours but goes longer at night. He was born 7lb 14 on the 50th but his weight is between the 75th and 91st centiles as of yesterday. He is very miserable in the day as will only nap 45 mins - he is draining his bottles and I think he might still be a bit hungry and this is why he wakes but HV said in not to up his feeds yet as he's getting big. What do I do? I'm cautious of hungry baby formula but I don't want ds to be overweight.