This may be a weird question but I want to start taking some parts off while waiting for timing belt parts to come and I'm wondering if over the next few days (probably until the weekend) if it's okay if I leave the side motor mount off and not leaving the engine supported with a jack, mostly since the car will be outside. I'm sure the engine won't just fall out but am I going to put extra wear on the other motor mounts or bell housing of the trans, etc?

I kind of feel like it should be fine but just wanted to check

Mine has been hanging on just the two side mounts for several weeks. Just cut a piece of 2x4 and wedge it under the AC compressor bracket