- Have No Shooting
Let these two bees continue to attack you. Don't shoot them.
Continue to dodge their bullets and after about 2-3 minutes you'll notice that they only shoot 1 bullet each. Keep waiting.
After about 6 minutes, they will stop shooting at you altogether. Let them come down the screen at least 10 times in a row without shooting at you.
Kill them. That's it. If you waited long enough, no enemy will shoot at you the rest of the game.