When I was reading up about FMT a while ago I read that you need to should heal the gut first and address what might have caused the leaky gut in the first place and then have the FMT. Also people like us need up 10 to 20 consecutive!
Confession

I did several home FMT using hubby as donor last year the first was a one off just to see what happened whether it was worth forking out for treatment. It helped but as Lindyap said it was temporary. My poop smelled of his for a while and then went back to how it was. We also did about ten consecutive too but again I am back to square one.
So I feel the gut needs healing then repopulating and being very strict with nourishing the new stuff with the right foods afterwards (who knows what that might be). What I do remember is my tongue went pink for the first time I had noticed (usually white ish and I was warm, usually layered up all the time).
I should also add that I didn't make him eat a strict diet beforehand which may be important too though he is a healthy eater I feed him after all but not quite as healthy eating as me as he doesn't have my problems!
I know my gut hasn't healed as I recently had a bout of iritis. So I am now trying a gut healing protocol to see if that works.