I'm going to play devil's advocate hear so bear with me.
Three months is too short a period of time to notice substantial regrowth of any hair. That fact is borne out by the cyclical nature of hair growth.
The angle of the face in the first pic is different from the last. Given the angle in the first pic we clearly see the temporal recession. That is not as evident in the last pic. Also minoxidil tends to work only on the top and vertex of the head. So if you had pictures of those areas, your progress would be more noticeable.
Lastly your hair is longer so we can't really deduce if you've grown hair or it has simply gotten longer.
I would suggest that you take pictures from multiple angles now. That way you will be able to see any progress you will have as time goes on.
Good luck.