14mo toddler twitching/tic advice pls

I’ve already seen specialists etc about a month ago when my little boy started this head twitching “tic” and they weren’t concerned that it was anything medical and I’m just keeping an eye and logging when he does it. It’s usually the same every day (2/3 times only if tired or in his highchair which he hates 😔) or he’ll go a day without doing it at all.

Does anyone have any experience with this on how long it lasted, if it did go away at all or stayed?

Obviously I’m worried about him still, it upsets me so much when I see it but I just have to try and stay normal and pretend it’s not happened.

I’m struggling to find any info online or anyone’s experience with their own kids 😔

Thanks