From about 18 months old until nearly 3 our grandson, used to swerve round me to get to his grandfather. I really didn't count. I mean to say as far as he was concerned grandmas were 2 a penny, and he saw less of me than my companion grandma, while he only had one grandpa.
This went on for, may be 18 months or so, then one day when staying with us we went to a local beauty spot and the children wee playing with the twigs, building little dens, when DGS decided he would build a miniature village so he squatted down to gather twigs and started asking me to find what sticks he needed. The others wandered on and he worked away for about ten minutes, while I stood quietly by and obeyed instructions, then he stood up, took my hand, and we were friends.