Is 4 to 6 months is long enough to get over someone you had an amazing relationship for 2 years?

It depends on each person. There are many factors that come into play here, like how easy or difficult it is to get over someone, our coping methods, and how the relationship ended. If your healing process is not on the right track, you might face withdrawal symptoms and prolonged depression. Similarly, if the relationship did not end well or was abusive (you might think it was amazing, but seemingly ignored the red flags), it will take you a very long time to come to terms with what happened, and an equally long time to calm your raging emotions. From my own experience, I was in a 3 month long relationship. It was amazing at first, but I didn't really I was being manipulated and abused. It has been more than 8 months since my break up, but it's still not easy to stop thinking about what happened.

There really is no set time for getting over someone that meant a lot to you. Take it at your own pace and deal with your feelings as you feel necessary. It genuinely is different for every single person- setting a timeframe or following one you think you're "expected" to might just lead to you not properly dealing with your feelings as they come. This can make the path even longer and cause some problems for relationships in the future. So take your time :). Work through things at your own pace. There'll be ups and downs, steps forward and steps back, but you'll get through it if you just let it happen naturally!

There is no correct answer for this question, as it depends on every person. For some people, moving forward after having an awesome relationship that lasted long is easy, but for others, recovering could take even more than 6 months. Don't think about the time it takes you to get over her/him; think about how are you going to go through it and how to avoid being hurt. Take as much time you need to start a different relationship with a different person, or you could even decide that having a relationship is not what you need at the moment.