I know it can be rough, OP, but with a few bits of advice you can minimize the similarities:
1. Eyes drawn in that style tend to be large and expressive, so keep yours squinted and dull.
2. Remain calm and unstressed to avoid getting any bulging forehead veins that resemble those hashtag-esque stress marks animators sometimes use. Avoid using hashtags altogether to be safe.
3. Finally, characters' mouths are either open or closed, so be sure to emphasize the changes in mouth shape as you talk. Point at your face if necessary.