When to remove baby mittens and booties?

I let my baby wear mittens till 3 months (old folks nagging that her nails are sharp). Now I'm regretting it because her hands aren't grasping at toys yet. I visited a doc (for another issue) and she suggested removing the mittens. As for booties, my baby stopped wearing them after 1.5 months cause the weather is so warm! I only put them on for her when we go out (for aesthetics reasons haha and also due to aircon places).