That's awesome, good work mate. There will be occasions where temptations are there. Just stay strong and remember the big picture and what you're aiming for. You'll look back on yourself in 5 years time so thankful for the decisions you made now.
If you ever slip up and have a drink, just remember that doesn't mean it's all over, and it was all for nothing - your progress doesn't reset to zero, it just takes one step backwards, all those steps forward you've taken are still there. Be kind to yourself, accept it happened, then get back on track, and you'll get there.
The good news is that these situations will be less and less likely to result in remission as you and your friends get more used to your sobriety. Sounds like your friends don't know yet, so they are continuing old patterns. I'm sure once you inform them of your plans, they'll be supportive, and if not, then they're making the decision to not be a part of your journey any more, and that's on them.
You might find engaging in new activities that don't centre around alcohol would help. I find if I exercise, I can't stand the thought of drinking afterwards, and only want to eat healthy food and drink water. Anything else feels a bit disgusting. You'll find what works for you.
Keep it up, you're making good progress!