I think your position is very nice for only 2 and a half months.
Only things I can see; Your leg is to far forward, you should have a nice solid line from your heel to your hip to your shoulder, to your ears. Tuck in your chin a bit. In the last picture, you are posting very high, post closer to the saddle, maybe lengthen your stirrup a hole or two since it looks like your hiked up a bit, you should only post that high if you are asking for say an extended trot. Good luck & keep up the good work!!