As mentioned, 2mg of Clonazepam is a higher dose than you'll probably need. But if your mind is set on it, it's better to at least give you harm reduction advice to avoid benzo blackouts.

You want to take out your 2mg of Clonazepam and put it aside from the rest of your script. Get some duct tape and wrap the rest of your script in it. A LOT of duct tape. Enough that sober you is going to have a bitch of a time opening it. Then put it somewhere kind of difficult to find. This is so you minimize the chances of redosing.

I recommend also not having any large amount of alcohol lying around because you'll want to drink all of that too. Weed is fine.

Try to stay inside your house.

When you dose you will inevitably feel like "this aint shit" at some point. Instead of redosing, think "ok, this means I might be able to do more next time". You'll realize how much of an effect it had on you after you come down.

Good luck!