AmySarah - Yeah, that's the same with DF. He lost 45kgs before the Op with the (the pre-op diet) Opti-Fast diet (which he hated, but still has the milkshakes cause he really enjoys them) and has lost 10kgs in a year, which he's pi$$ed about, but I'm always trying to tell him that the doctor DID say he'd lose the weight slowly. Yesterday was a year to the day that he had the surgery (he proposed to me the day before the surgery because he wanted me to know how important I was to him in case anything happened to him in the operating theatre - his words, not mine!) and he's still happy that he's losing it, he's just annoyed that it's slowly.
I will definitely pass on my congrats to him for you as well Pass on my congrats to your mum not needing to sleep with oxygen! That's a big achievement especially in three months!