Growth spurt?

Sravya

My son is 3 weeks 2 days old. For almost a week now, he is always wanting to feed (nursing and formula both- mostly less formula, but always wants to nurse). I’m nursing him all the time and cannot get anything else done. I also have a 20 month old toddler and it’s becoming very difficult since I’m stuck with nursing all the time. Is this a growth spurt? If so how long will it last? Anyone experiencing similar issues?