Unfortunately, Nintendo only tracked per half-year during the N64 and beginning of the Gamecube eras, and before that only annual sales.
1. Gamecube
Yr. 1 - 3.29m (6 months)
Yr. 2 - 2.87m (6 months)
Yr. 3 - 3.5m
Yr. 4 - 2.06m
Yr. 5 - 1.3m
Yr. 6 - 310K
Yr. 7 - 60K
Yr. 8 - 0
https://vgsales.fandom.com/wiki/Nintendo_GameCube
1. Wii
Yr. 1 - 3.19m
Yr. 2 - 6.96m
Yr. 3 - 10.41m
Yr. 4 - 11.31m
Yr. 5 - 8.74m
Yr. 6 - 5.61m
Yr. 7 - 2.2m
Yr. 8 - 600K
https://en.wikipedia.org/wiki/Wii_sales
1. Wii U
Yr. 1 - 3.06m
Yr. 2 - 1.95m
Yr. 3 - 1.91m
Yr. 4 - 1.87m
Yr. 5 - 200K
Yr. 6 - 0
Yr. 7 - 0
Yr. 8 - 0
https://vgsales.fandom.com/wiki/Wii_U
1. DS
Yr. 1 - 5.6m
Yr. 2 - 8.79m
Yr. 3 - 11.15m
Yr. 4 - 11.89m
Yr. 5 - 11.65m
Yr. 6 - 9.01m
Yr. 7 - 2.06m
Yr. 8 - 1.17m
https://en.wikipedia.org/wiki/Nintendo_DS_sales
1. 3DS
Yr. 1 - 8.35m
Yr. 2 - 7.64m
Yr. 3 - 7.76m
Yr. 4 - 4.98m
Yr. 5 - 3.59m
Yr. 6 - 3.73m
Yr. 7 - 3.01m
Yr. 8 - 1.13m
https://vgsales.fandom.com/wiki/Nintendo_3DS
Nintendo Switch
Yr. 1 - 7.63m
Yr. 2 - 9.41m
Yr. 3 - ??.??m
Given traditional sales data, if the Switch follows a trajectory similar to either the Wii or DS, its holiday sales peak will be next year, and it should have a holiday season around the same numbers as 2019 in 2021 with still high sales in 2022.
I describe myself as a little dose of toxic masculinity.