Maybe you can try Warp PLS or SmartPLS to implement partial least square based SEM. But, since you want to check the collinearity, the Warp PLS can provide the collinearity result as well 

The Unscrambler software provides a powerful tool to perform PLSR. In my recent paper the software was used to specify a model relating soil salinity and spectral measurements.

There is now a module available, see repec, or from within Stata: ssc install pls

https://ideas.repec.org/c/boc/bocode/s458107.html

How do you obtain fit indices (GOF, q2...) after pls in Stata?

Thanks

Check this out:

https://www.smartpls.com/resources/ebook_on_pls-sem.pdf

Check this out:

https://www.smartpls.com/resources/ebook_on_pls-sem.pdf

Thanks

You can do this regression by using this command

ssc install pls