You still have a lot of changes left, so if you want to do it, go for it.
I personally hate the in-between stage and wanted nothing really to do with documenting it. I've taken a bunch of photos, not so much for documentation of changes but so that I can have a current picture of myself. I like the way I look now. And yes I have put them side by side for comparison purposes, but that's not why I took them.
Do what works for you and it's never too late.
Jay