Any tips on how to prevent your vibrato getting to bouncy and bow to make it more consistent and more flow like?

Yes! Here's a short lesson on troubleshooting issues with vibrato: https://www.youtube.com/watch?v=uiS-_vj9r6U.

I also recommend practicing on a tall, open vowel (like AH, UH or OH); and if that doesn't work well, experiment to see if there are other vowels or sounds that feel easier.

Next week, I'm shooting an entire 14-day course on vibrato, so keep an eye out for that for more in-depth guidance and exercises!