So my 12 week old son was 9lb born and breast fed till 6 weeks and I couldn't carry on as he was feeding every 2 hours day and night. Switched to bottle and he's on hungry baby and has 7-8 7oz bottles still every 3 hours. So last week I gave him baby rice before bed still no longer between feeds so now he has breakfast lunch and dinner plus all of his bottles and water inbetween. Is my son impossible to fill up? He's already 16lb10