Dreams involving loved ones who have passed away can be particularly emotional and might reflect your feelings of loss, grief, and the connection you still feel with them. In this dream, your father appearing as a giant could symbolize the larger-than-life impact he had on your life. His wobbling and uncoordinated movement might represent your feelings of instability or imbalance in your life since his passing.

The act of him falling on you and squashing you could reflect a sense of being overwhelmed by your grief, as if his absence is weighing heavily on you. The inability to move him off you may suggest feelings of helplessness in processing your emotions or dealing with the loss.

Waking up scared indicates that this dream might have tapped into deep-seated fears or anxieties related to your father's death and the changes it has brought to your life. It’s important to acknowledge these feelings and consider finding healthy ways to express and process your grief. Talking to someone you trust or engaging in activities that honor your father's memory might help you navigate through these emotions.