I thought Lacan went out of vogue some time ago and was now confined to being a historical curiosity.
I'm not much help, but I was supposed to study him on my degree and ended up doing academic contortions to get out of it. It was part of my critical theory units, but I couldn't take it seriously even for that.
In layman's terms, I always filed him under 'useless, weird bullshit that means nothing and is a load of crap'.
I did still pass my degree just fine!
Anyhoo, I'd change if I were you and find someone who's more up to date with modern methods. A lot of stuff has changed since Lacan snuffed it, for starters!