If your loved one is still alive and has recently changed their will in a way that you are not happy with, you may be finding yourself looking into contesting it. Wait before you put time and effort into that, though, because you can't contest a will if the individual is still alive. Why? They can change their will at any time.
If you are unhappy about changes to the will, you may be able to contest the will after your loved one's death. At that time, you should be able to bring up past wills and other documents that support your claims, so that you have a better chance of the court agreeing and ruling in your favor.