FAILOVER for streaming with webex or skype for business

Hi everyone! I´m quite new with mikrotik and I find it definetly awesome hard+soft!
I´m working a few days trying to do failover for streaming.
I have followed this https://wiki.mikrotik.com/wiki/Manual:VRRP-examples and I make it work
VRRP works fine but the session quite and even thought the connection only drops one line of a ping
the video conference hangs and log out.
I read about SIP and that the failover does not work quite well with NAT because of sesion matters.

Does anyone know how to do failover with SIP/Video conferencing involved?
I have to do videoconference with skype for business broadcast and I need a failover setup
The internet connections are cable dsl with ethernet port and 4G modem with ethernet port
I have two mikrotik Hex Lite and one switch cisco SF100
I have everything up and running with VRRP

Also read that routing without NAT will make SIP work, but I dont know how to do this in this scenario with VRRP in the middle.

Well, thank you very much!!!