Don't wait that long. Get your form looked at now, so you can internalize and practice the corrections when the weights are lighter. When the weights get heavy, you have a greater chance of having form break down, which will happen, but if you have poor form to begin with, you could get hurt. That might require a significant reset. Or, if you wait until the weights are heavy to seek out a coach, the corrections may also require a significant reset. So consult with one now, then at regular intervals after that, in-person if at all possible.