Yes,you can take it down to near bow dimension. Cut you a form from a 2X6,whatever shape you want,(be it DR,reflexed,straight,etc.) ,then clamp your green stave down.Give it a full month ,then remove from the form,then bring it inside,or any dry place.Give it a few more weeks,then start weighing it.When it looks as if it will lose no more water weight,start your tiller.If it looks as if it is dry ,keep going. JMHO God Bless