You need to get the tape measure out and take some measurements on the amount you typically NEED to lift. Then compare those numbers to the actual safe lift height capacity of the jack. I agree that extending the jack to far is a safety concern. You have several options or solutions, these include replacement or “ground lift” aka blocks.
It’s hard to tell if your jack has a drop leg, basically a DL telescopes through a sleeve on the leg. If yours doesn’t have the drop leg that may be an option to give you more range of lift. The simplest way lift higher without REPLACING or extended the jack out is to carry blocks. I bought a 4x6x8’ and cut it into 8” blocks. This gives me the option of 4”,6”,8”, 10” or 12” of “ground lift” by using a block or combination of them, so I don’t need to extend the jack so much.
VENI VIDI VICI