Time To Replace Turbo on ISX?

[TruckerFamily2]

2013 Peterbilt ISX-15 CM2250 is OO. After just finishing over $12,000 of after treatment repair, now told the Turbo must be replaced! Truck working great, but won't completely Regen, and every 400-600 miles signals needs Regen. After 3 subsequent shops replaced what they said the ECM reportedly needed replacing, the ECM was NOT properly recalibrated, cleared of fault codes, updated and forced Regenned. Engine has over a million engine hours on it, (275,000 hours idling), but runs great except for the incomplete Regens! Time to replace Turbo?! We are told it is very unusual for a Turbo to last this long! We are very thankful it has! Angels watching over us!!