Sorry for the late reply!
All of the + affection points are as follow:
- Do not apologise to Chinamu on day 2 (Stay silent). = +1
- Salt > vinegar > mustard on day 3 for the cooking event. = +3
- Antifever meds > (Take it yourself first) on day 4 = +2
- Choosing 'Mother Goose' on day 5 = +1
- (Try to find something stimulating) on day 6 = +1
- Taking a book off the shelf instead of giving Chinamu sleep medication on day 7= +1
As long as you've also thrown Chinamu's ring into the trash on day 4 or 5 and picked it back up with Flow on day 6 (and rejected Flow's proposal on day 5), this should lead you straight to the true ending (as you only need 7 points).