Yeah the summer months should be fine without anything major but September onward will need something.
Last year Lite+Link's Awakening+Luigi's Mansion+Ring Fit+Pokemon Sword/Shield all released within a 2 month window in the fall leading to an amazing holiday.
Nov- Mario 3D Collection (64/Sunshine/Galaxy1)
That would be alright granted whatever extra game it will be. Then next year we can have a much better software year, something like 2017 maybe