An easy way to start drawing (again) ...
Exercise one: keep your eyes closed
Close your eyes and take a couple of breaths. With your eyes closed, start experiencing colours and shapes.
Next, try to visualise what you saw before you closed your eyes by imagining contours of objects, shadows and highlights.
Exercise two: keep your eyes open
Do the same with your eyes open. Look around. Compare contours, shapes and colours. Notice parallel lines and gradients.
Exercise three: trace in the air
Keep both eyes open and look around. Use a finger to trace contours in the air. Use your thumb and index finger to compare dimensions. Take it easy, don't squint.
Exercise four: draw on surfaces
Use your finger to draw what you see on different surfaces. Feel the difference between materials but keep looking at the subject.
Don't forget to stop when you get bored!