I can relate to your problem bro this year marks 5 years of toking up for me and ive noticed i become very forgetful when im high
ie the other day i went outside to get my washing walked straight up to the clothes line and thought to myself why the farrk am i outside again? it wasn't till i walked back in the bathroom to have a shower i realised i was meant to go get my clothes haha, but yet when im doing important stuff like working on my moto/car, wood work (using power tools) and important stuff i seem to be fine, its just the little things.
Maybe smoke some more sativa dom strains? get your mind/brain working better then indica, but hey at least you get distracted and from whatever it was your meant to be doing and just go about something else haha