Awww comel kan! Ini normal je, babies start doing this around 2-3 months sebab they're exploring their own bodies and it's actually a good sign of development A few of my mum friends said their babies did this before they could grasp toys properly, so it's like their way of discovering "oh, this is MY hand!" Biasanya they'll outgrow it naturally, so don't worry la, ini part of growing up!