Django friend post model storage to create feed

I have a custom user model extended with a one to one relationship to a Profile model, I also have a Post model. I want to create an attribute inside of Profile to store Posts of the users friends to make a recent updates feed. However I am struggling with what attribute or type of data storage to use (idk what to call it). Can anyone help? The line of code relevant is bolded in the code below.

class Profile(models.Model):
user = models.OneToOneField(settings.AUTH_USER_MODEL, related_name = 'profile', on_delete = models.CASCADE)
image = models.ImageField(default = 'Default.png', upload_to = 'Profile_pics')
slug = AutoSlugField(populate_from = 'user')
bio = models.CharField(max_length = 255, blank = True)
relationship = models.ManyToManyField('Profile', blank = True)
**feed_posts = ArrayField(blank = True, default = list)**

You probably don’t. This is the type of feature that’s best handled by a live query. (The overhead of maintaining such lists across any sizable number of users is greatly going to outweigh any benefit from having it available within the profile.)