I don't really have any answers except that most of the T's where i live do not offer crisis support as in taking calls during the night or weekends even.
My T isn't available after 5pm till 9am the next morning. She isn't available at weekends or when she is on holiday. She does generally get back to texts in the same day but it can be hours after i've sent it. Those rules obviously help her to prevent burnout but it sucks for me.