You could show some of those specific days in November and December. And maybe have a montage to ger to the big talk scenes.
I feel like if they will talk for awhile before dating maybe we can get straight to the kiss. It might be seen as padding things out otherwise. But itbwill depend on if the story feels long already or if there is still a short period to go.
To be honest it can be tricky to decide what to do since there is really no right or wrong way. But I think the method I gave might work best.