Try to not worry about the level of wakefulness or sleep patterns or about anything else during the attempt. Worrying about anything will prevent falling asleep more than it will help.

Rest assured that upon waking up, it's possible to enter a dream within a couple of minutes after feeling very awake or moving or not noticing the awakening immediately.

To attempt to jump back into a dream upon waking up, just lay in bed with eyes closed and casually imagine the desired dream for a couple minutes.