DS2 developed a flat spot....I tried as best I could with turning his head whilst he slept but all it would take was for him to move little and it would just naturally fall to that position.
What I used to do is put him in his bouncer and would position it so he could only see me if he faced one way...I would also have the tv on so he would look at that (distracted by colour and movement).
He is almost 6 now and the flat spot as resolved itself.
Once the start moving and rolling, etc they spend less time on their back and therefore less time on that flat spot.
DS2 never had any neck issues....so nothing that forced him to look a certain direction.
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