Since the console is actually sold out, the shipped to sold through ratio should be very close so there should be some adjustments coming.
From the numbers, we know 7.8M consoles were manufactured by end of March (and sold-in, as currently everything that is manufactured is already sold to distributors), and we know roughly 270k consoles were manufactured per week.
It takes roughly 4 weeks to ship from China to Europe/America, considerably less to Asia. So we can assume a roughly 3 weeks supply was on ships floating to wherever they were heading to, so the sell-through by end of March should be around 8M.
That's pretty much exactly what the data here says.