When would you post a picture ?

So me and my boyfriend started talking in November. We are pretty close did his birthday, Christmas together. I met his sister and her fiancé and he met my family but I haven’t met his parents. Anyways he made it official with me this week. We have a lot of really cute pictures together do you think it would be too soon to post one with him on Instagram? How long would you wait. Would you wait until he does first?