Some time before Switch launched, Nintendo had stated that they planned on having 2 million consoles ready before the end of March. Later on there were rumblings that they had ramped up production and could possibly have about 2.5 million ready by then.
The SuperData shows that they will need every single one of those units, and more.
On an article published by GameIndustry.biz which provides information from SuperData, it shows that Nintendo Switch has sold over 1.5 million units worldwide only two weeks into the month. Even more impressive is The Legend of Zelda: Breath of the Wild selling around 1.34 million copies of the game, for an unheard of 89% attach rate on Nintendo Switch.
It is important to note that Nintendo has been able to achieve this without the Holiday push, and they should be able to continue the momentum, as long as production can meet the current demand.
Nintendo is expected to release Mario Kart 8 Deluxe, ARMS, and Splatoon in April, May, and June respectively to continue the upward trend and avoid any pitfalls caused by scarcity of worthwhile releases.