In this situation I would suggest bevel up. This puts the point down and “scoops” the skin up as you go in, and because of this getting in will be slightly more difficult, but once you’re in, you will have more control. You will also likely create a small flap of skin at the incision point and possibly an odd scar there for a while as a result, but the point down is the only way to go if you can’t manage to tent the skin. You can adjust the angle of the needle to control depth as you go. Just go slow and carefully if you can.
I would start if possible with a tenting of the skin, but once in, if you are bevel up / point down, as I said, you can usually just guide the needle without needing to tent the skin as you go.