Don't use the whole ounce. A silkscreen or fine mesh thing like a metal coffee filter or tea strainer? Rub the buds on that until you're sick and damn fired of it. Then come back and do it again, later ;) That rubs the crystals off of the outside of the plant, which is what dissolves in the oil / has the majority of the CBD/THC in it.
It'll be perilous little looking,especially just sitting as sticky dust in the bowl/plate/whatever is under your strainer. But use a credit card and scrape it all together (and off the back of the mesh!) and press it into a little square or ball. Maaaaaaaybe 1cm block off of an ounce of weed after you squish it all together in a little brick. Then you add the little brick of hash to oil for it to dissolve in. How strong you make it (brick to oil ratio) is up to you. Back when I did this, I only added enough oil to dissolve everything. Meant 1-2 drops = 1/4 cup of bought hash oil. <grin> You can also just drip the drops under you tongue :D Or add a few drops to however much oil is called for in a recipe. It really is more art than science in a lot of ways... Although you can science out and get percentages etc / some people really enjoy that... I just guinea pig'd myself and found levels I liked.
THAT way, though? Keefing the crystals off of the bud? You get the hash oil AND an ounce of smokeable weed. Because the crystals aren't just on the outside of the plant, but the sticky things are all throughout the flower buds, and in the sap / etc. It will lower the effect of the MJ by about 1/10th to scrub all the crystals off the easy accessed outside. But that hardly ruins it. And that way you get both hash & bud. 2:1.
<grin> the NICE thing about being a newbie is like the nice thing about being a virgin. It's all new, so there's a lot of experimenting, and getting better at it is fun :sneaky: