For the "Good Father" trophy you need to follow the schedule. You can find the schedule in the kitchen.
There is a watch on the wall in the living room and another one in the kitchen where you can check the time.
04:30 - Snack (go in the kitchen and take an orange - then give it to Shaun, this should be done between 04:30 and 05:00)
06:00 - Homework (talk to Shaun about the homework and tell him to do it now)
(Shaun will start to sneeze before 06:00, ask him if he feels sick - you can go to the bathroom and find some medicine in a cupboard - give the medicine to Shaun after he has done his homework)
07:00 - Dinner (ask Shaun about dinner and the go to the fridge - you can make him chicken or pizza)
08:00 - Bedtime (tell Sahun that it's time for bed - after Shaun brushed his teeth go to his room and close the rolling shutter, say good night, he will ask for his teddy, go downstairs and grab it from the washing machine - it's left from the kitchen - bring the teddy to Shaun)
After leaving Shaun's room a cutscene will start and you are done. The Trophy will pop at the next loading screen.
Gus and Geoff from Achievement Hunter made a video guide for this trophy to watch the steps. Alle credits for the video go to them:
As always: Vote as you like! I just want to help!