Since no one is showing up here, I suggest that you go to the Facebook pages of groups who regularly travel to Mexico.
I have never visited them, but I hear that they have a lot of good advice from those who still travel there regularly.
2021 Promaster 1500 118wb conversion
2019 Roadtrek Simplicity SRT (almost a Zion)
2015 Roadtrek 170
2011 LTV Libero
2004 GWV Classic Supreme