I am sure your teacher will tell you what they expect in the way of practice. I was only able to practice about 15 minutes at a time the first week or so because my fingers were sore but after that I was able to increase my practice time and I did practice every day. Now I still practice every day for at least an hour and if I have time I can go longer. Especially when it is a GOOD practice. Have fun.
Try to do what your teacher advises. If you are enjoying it, practice as long as you like, as long as your muscles aren’t sore, you aren’t getting frustrated or repeatedly making the same mistakes. Then you’d just be practicing mistakes! Enjoy the process of learning violin.
I have seen it said many times: it’s not the quantity, it’s the quality. 15 minutes of quality practice can yield great results. I try to aim for at least 30 minutes each time I practice, and in that time I spend 2/3 of the time on scales, etudes, and technique. The rest of the time is working on music for my lesson.
I started 10 months ago with 15-20 min/day, and not all days. Now I’m able to practice about an hour. For me is very important to be focused, so if I’m (for example) too tired one day, I try to practice at least scales and some etude, but have a good practice time.