800mg is wayyy too much, almost a dangerous dose, as high doses (600+ mg) can cause seizures, so don't take that since you don't use muscle relaxing benzos (don't get in to benzos, they're worse than opiates the way they grab you by the balls). Your first Rx experience was 800mg Lyrica, which is a pretty intense experience as far as Rx drugs go. You should stick to smoking weed if you're going to be wreckless, or at least give your extra lyricas to a friend to hold on to if you're going to lose inhibition and keep redosing.
Lyrica is one of my favorite drugs, and even with a benzo tolerance, 200-400mg had me feeling awesome, when my tolerance dropped to about your level, I had a very nice high off of 200mg, full of all day euphoria with an awesome afterglow, empathy, and intense energy, so that should be a perfect dose for you. The only way to keep enjoying it is to keep your dosages low to keep your tolerance to it low, using it more than once a week recreationally is useless, once a month is best. Getting sloppy like that is no good, man, you don't want to ruin your relationship with your parents over occasional drug usage.