LO in shock

Hi mummies, FTM here. Is it normal regarding the following situation? LO currently 3MO, starting to be curious and grab hold onto things. Whenever anyone carries her, she would grab onto our shirt tightly and sometimes have a "shock" / "scared" expression , as though if she let go, she would fall. Or if she is on diaper changing table, she would grab tightly onto the side bar, or even on the rocker, she would hold tightly on to the side as well. Also, she doesn't know how to sleep on her own and will always cry when she is tired, we have to pat her/use baby carrier, and have to carry & walk, if not she would cry (esp if we remain stationary/if we sit down/put her down onto bed and pat her). Sometimes when she finally fall asleep and we put her down onto her bed very gently, she would open her eyes suddenly (again, in shock) and cry and we have to pat her again to sleep. It takes several attempts to make her sleep.. Or at times when we carry her in our arms and she is finally falling asleep, her arms would suddenly jerk and eyes wide open (in shock) and close back and fall asleep and then after 2 to 3 mins, it will happen again - she would suddenly jerk and wake up.. Just a note that we didn't drop LO before.. I read about Moro reflex but doesn't seems like it leh... a bit worrying and wonder when will this (LO always in shock) go away..