DS is 14 weeks. He's EBF and is usually a 5 or 6 feeds a day chap. He goes through the night but had an unusually long feed at 9.30 last night and I'm now on my third feed since 7.45am. They're proper feeds, not just little snacks. He was his usual calm self before the first feed (let me change him before feeding with no shouting) but since then has clamoured noisily for each feed. usually he goes about 3 hourly between feeds - I feed on demand.
Is this the growth spurt and if so how long do they usually last?