you can do it if you feel you need to but think about how much your cutting off, if your plant is only gonna yield and ounce then taking a dime is kinda significant, however if its a QP or more then you can prob cut off a 2 gram nug from the bottom and dry it but you wouldnt be able to smoke it for 2 days at the earliest, i dont like the sound of this oven idea seems to desperate to me. but when the entire plant is done definately hang it until the buds are nearly dry then put most of them in mason jars to cure, opening each jar atleast once a day to release moisture. and keep accouple buds to smoke while your buds are curing. you WILL notice a difference in your cured and non-cured weed, the cured weed is so much smoother and the taste and smell have so much more depth than the regular dried bud