Well, I am no expert, so only have my experience and accounts of others
3 mg would be way too much for a first dose. I am doing my 5th or 6th experiment spread over 3 months. Last 3 were 2mg, and I have seen reports that some people end up on a higher dose.
Like any tolerance build up, I would expect it to reset over time. At least I haven't heard anything about permanent tolerance. It's been around quite a while now.
Yeah, I wasn't thinking permanent tolerance, just should only be a Saturday night thing - so 4-5 times a month. I will probably try .5mg at first. Then following week 1mg and go up by .5mg a week.