MG Barnes, the quixotic manager of Army Ordnance tank programs, had already ordered 1200 T-29 and 600 T-30, of which T-29/30 were reduced to 1152/504 on 12Apr45. I suspect that the rush to production would have required just what you mentioned. The first pilot T-29 was assembled prior to the end of the war but most priorities were slackened already upon the Japanese acceptance of terms so we cannot estimate how many production tanks could have been shipped to the Far East even if the acceptance trials went well.
Barnes had no authority to order tanks, that was ASF and General Somervell.
On 1 March 1945, OCM 26825 recommended procurement of 1,200 Heavy Tanks T29, even though Pressed Steel Car Company had barely begun production of the first two pilots. Army Service Forces approved procurement of 1,152 on 12 April, along with four additional pilots, two of which were later ordered equipped with a 120mm Gun T53 and redesignated as the Heavy Tank T34. On 23 August, OCM 28848 cancelled the contract with Pressed Steel after it completed forging and welding a single pilot and partly finished the second. The order transferred all work to the Detroit Tank Arsenal and authorized just ten pilots for developmental studies, later reduced to eight by OCM 31654 of 10 July 1947. DTA finally delivered the first complete pilot to Aberdeen in October 1947 and two more in 1948.
The Supply Division, Army Service Forces, directed the limited procurement of 500 Heavy Tanks T30, sufficient to equip seven battalions, on 10 March 1945. The action was based on the recommendation of the New Developments Division of the Office of the Chief of Staff, which believed the T30 should be procured along with the T29, because the interchangeability of parts and use of the same production facility would simplify manufacture. It appears these were included in the number ordered of the T29. As for the T29, the end of the war resulted in the cancellation of all except the pilots under OCM 28848 on 23 August 1945. T30 with a 155mm Gun T7, which was an adaptation of the standard 155mm Gun M1 used by the Field Artillery. One of the two pilots was later fitted with an experimental automatic ramming, cartridge case ejection, and elevation/depression system and was designated the T30E1. Both The two Heavy Tanks T30 did not arrive at Aberdeen until April and July 1948. Originally Ordnance intended them to use the Ford GAC engine, but like the T29E1 used them as testbeds for a new engine, the Continental AV-1790-3 as later used in the M26E2/M26A2. Although outwardly similar to the T29, Ordnance armed the pilots were fitted with a powered lifting device for handling the heavy and awkward separate loading ammunition.