Hello.
It depends on the intake process for visitation to begin.  It it typically 30 days, but I do know it can take longer.  My son took 90 days, as did several others.  Know of others that took 45-60.  Count on 90 and anything you get better, it is a blessing!

You can put money on his books or send him commissary by using the ecomm system.  It costs $3.75; cheaper than most other services.  Sending a care package is always a nice surprise, too.

https://tdcj-ecommdirect.portal.texas.gov/
They do close at 8:30pm-4am.

Hope that helps!
Cheri