We first used a swing with our son when he was maybe a week old. He didn't tolerate it for long, so it didn't get much use for the first two months. Then at about two and a half months he started wanting to be held a little less and started spending more time in the swing. Now at 3 months he spends about 20-30 minutes in it 3-4 times a week while I fold laundry or cook dinner or do other chores.