hi ,yes your are right dreams tend to reflect our inner life & our response to outer life,
drowning etc all refer i feel to being overwhelmed emotionally,
i think this dream is addressing some area of your life that has been put on the back boiler so to speak,
perhaps there are things you would like to do,but because of some hold up have not come into consciousness.ie been realised,
i say this, as children real or not in dreams can symbolise the hopes & wishes for the future we have for ourselves,
also the head falling off,i imediatley thought of ,losing ones head,or mind,becoming irrational etc.
then the possitve aspect shows up,
you doing mouth to mouth,this is usually a kiss of life,so may refer to you bringing a certain project or hope back to life,or at least bringing a possibility to life,
it may be you have already started something.
hope this kick starts something.
rgds mikey