Lower rear (dogbone) engine mount replacement

I have a new stock mount to replace my knackered one.  I've just replaced all suspension and control arms bushes and had wheel alignment done, therefore I don't want to be removing the subframe if possible.

Can the mount be replaced in-situ?

I'm thinking I can use the old mount with a cut in it to drift in the new upper part from below, as it doesn't look to take much persuasion to press in from the videos I've watched.  Then drift the lower part in afterwards.

Thanks.