Absolutely it can be done. My gunsmith did my Model 629 without going all the way through the topstrap.

If you cannot find someone locally, she nd me a PM and I’ll give you his information. He’s been a gunsmith since 1971 and all the big box gun stores locally and the Ohio State Highway Patrol uses him, too.

You could probably send your revolver to him and get it back but any GOOD competent gunsmith can do it.