Hey, I had my lletz at about 10am and took the rest of the day off, I went back to work the next day but was very tired for a few days. Mine was on a Monday so not ideal as had the whole week ahead. But it wasn't too bad and manageable. I started a new job two weeks before I found out about my abnormal cells so I know how you feel there! Work were very understanding luckily. At the end of the day,your health comes first and you just have to do what you have to do and work around it as best you can.
CIN2 is moderate changes to your cells. Which they will usually remove. I had severe changes so mine were removed. Moderate and severe are just less likely to go back to normal on the own than mild changes so they treat them with the lletz procedure. The procedure itself wasn't bad at all for me, it was all over and done with in 20 mins. I almost felt I could go into work after it but they advised just to rest for the day. Another day off would've helped but like you I didn't want it to get in the way if work too much.
If you're feeling as though you're not sure what's going on I'd suggest using the ask the panel message board on here or calling the helpline. They are really helpful and know what they are talking about.xx
2012 - first smear. Normal
Aug 2015 - abnormal smear, severe dyskaryosis. Loop excision.
Sept 2015 - results back, CIN 1,2,3 confirmed. All removed and no cancerous cells. Back in 6 months for smear.