I had to use a jack the first time I removed mine. I bought in fall of 2018 and I think I was the first one to ever remove its doors the following summer.
If you use a jack have someone help you or BE READY because when the door starts to come off, there's no stopping it and you'll have to catch it! I wasn't ready for the first one but luckily I was paying attention at least and I was able to keep it from hitting the ground. The second one obviously went better because I had one of my sons help me catch it.
While you're at it, buy a set of door hinge bushings because once you have the doors off, you'll take them off regularly and the new bushings make life easier. The doors come off with very little effort now.