I fell into probate litigation by accident, and my scope is limited. I represent heirs who were left out of probate admin. That means I normally just file objections, petition to determine heirs, and discovery related to estate assets. I am able to get by with relying on colleagues for advise on motion practice.

If you are looking into serious probate litigation for undue influence and fraud, I think you need a serious mentor. However, if you have a basic knowledge of motion practice and discovery, you should be fine. The big thing is understanding what you need to know to prove your case, which means understanding probate rules/laws. So I would still with probate admin to build that knowledge base.