I planted a pear tree 35 years ago. It developed a lean, so I have supported it with a rope and stake for many years. The trunk at base never got as large a nearby trees at the base. When I push it, the soil moves, which suggests it is not as deeply rooted as expected. There is another pear tree growing very close, 5-10 years younger, very sturdy, healthy. I meant to move it after clearing some trees for space, but it grew too big too fast. The pear in question never produced until last year (2020), when there was a good crop. Outside of its inability to support itself, it appears healthy - no noticeable amount of dead tissue, for example. Is there anything I can/should do at this stage?