what level are you at with his like and hearts? also I'm 90% sure he can only receive the gift at night and the only gift you can give him is wine atm.
off that though there are quite a few ways to get more like than just asking to help him and gift giving, they just all depend on your current standing with him. like before 1 heart you can begin by starting the werewolves storyline and looking for his missing friend.
alright, going to his house at night isn't possible at the moment then, have you done the date with him at the bar? also has he invited you to visit the hut with him on Fridays? if you don't have the hut you can unlock it by doing his quest about searching for his friend and looking for it in the forest.
