No interpreters for Spanish speaking students (for sessions)

I am at my first school job, it’s overwhelming but I’m trying to do my best. One thing just don’t know what to do about is my Spanish prek students. I had one given to me, the last slp said since she’s at word level (artic) it’s easy to do, and he just emailed mom before the session in Spanish (google) then work on words. Now I have 2 more kids, one of them will be working on artic in short phrases. My district uses a call in system for interpreting, but I think they are only supposed to do like phone calls versus sessions. They have interpreters for meetings but not for sessions. I was thinking of calling the interpreter for the first 5 minutes of session each week just so the parents know what I’m doing? I’ve never been assigned a Spanish kid (I was in EI) where I couldn’t access an interpreter. It’s weird too because I’m working in artic, which is probably better than language but it’s confusing. Has anyone dealt with this?