Because the bark looks intact, I’d remove most of the peaches and tape and splint it together using vinyl electric tape, all supported by a piece of electric conduit pounded into the ground. At worst, the larger side will become the entire tree but there’s a good chance both sides will heal if enough bark is intact.
The tree is a solid example of the benefit of pruning by ratios. It didn’t split just because it was overloaded- that can cause branches to break, but usually not splitting. You essentially created a co-dominant structure that begs to split under stress.