A brief reminder is reasonable after about a week, especially because the consultant offered the introduction themselves.

Consultants are busy and introductions are easy to forget. A polite follow-up can be helpful rather than annoying when it gives them an easy way to act without making the request feel urgent.

You can reply to the existing thread with one sentence thanking them again and saying you wanted to follow up on the introduction whenever they have a chance. There is no need to restate your full background.

Send one light reminder, then leave it there. If the introduction still does not happen, continue networking through other contacts rather than repeatedly chasing the same person. If useful, this guide on consulting coffee chats gives more detail.

One reminder after a week feels completely normal.