I trained MMA for 7 years, but quit for 5. How long would it take to reach competition strength again?

First of all I know what you mean that some clubs don't have the experience level that your looking for and the skill. I have had that before. not trying to sound y but I dominated the cruiserweight divison in ontario. I won 12 fights at that in a row. then moved around in weight never lost with a record of 22-0-0. So you really have to find a club that is your skill set because if you spar with people you beat each time and don't beat you. You become too confident and get lazy ( for the most part) so I'd advise looking around trying different clubs. Or maybe go for that MMA cl you tried out your decision. And for the original question in your Headline. It all depends on your heart and dedication. It could be from anywhere of 2 -3 months too 18-24 months if your working something 5-6 days a week. I'm sure you could be at your level again at least physically in 2-3 months. And winning some fights for yourself it all depends on the dedication. Any questions man, Just throw me an email it's on my page.