I would say change whose to who's
<span>the latter half of 1989.</span>
In this context lousy is being used as doing something poorly or badly. The family is doing a poor job at holding their new years resolution.
Strict is being used as stern in a way to not break character. / The father will not break his diet.
Stuffing is used as a way to say eating a lot or eating like a pig. The father was feeding himself like a pig.
