Howrah Rajdhani - At 50, the Handsome King 👑 is still ruling the tracks superbly. - Somanko

I don't think any train to Balharshah would be successful from Jabalpur.
First of all Chanda Fort is not that far off from Balharshah, having travelled numerous times in this route through Rajdhani/Duronto I have seen the distance myself it's more like 9 to 11 Kilometres apart. Plus that station is in Chandrapur, much bigger City than Balharshah.
Also, Balharshah is not exactly a high patronage providing station. Unlike other compulsorily halts like Bhusawal, Jhansi, Deen Dayal Upadhyay Junction etc. I have rarely seen people boarding or deboarding at Balharshah in noticable numbers....
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Plus there's a demand from Jabalpur (and surrounding areas) to Nagpur for many facilities majority being Medical facilities, similar demand simply doesn't exist for Balharshah.
Only hope for Jabalpur sourced trains in this route is if the destination is set to be a bigger City like Hyderabad, Tirupati, Chennai, Bengaluru etc.