How can I display total likes per month of an post to the author on Django

I want to display total likes a author got on his post on monthly basis in Django. For eg: On january total likes of his post is like 100

def total_contents(self):
    total_likes_received = post.objects.filter(author=self.request.user).count()
    return total_likes_received

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    context['total_contents'] = self.total_contents()
    return context

This is my views.py but this code will return total post he posted on the website. I want to return total likes he go on his post per month on Django

class blogs(models.Model):
    title = models.CharField(max_length=100, null=True, blank=True)
    slug = models.SlugField(max_length=200, unique=True, auto_created=True)
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    created_on = models.DateField(auto_now_add=True)
    time = models.TimeField(auto_now=True)
    likes = models.ManyToManyField(User, related_name='likes', blank=True)
    liked = models.BooleanField(default=False)
    like_count = models.BigIntegerField(default=0)
    post = models.TextField(max_length=200 )

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