@hal@slime.global You can do all the classes online. If you do that youll be in a pool starting from day one and in a lake or ocean by day one or two (very shallow at first). Depending on how you get certified the in-water exercises can be done within a few days.
This is all open-water cert mind you which is the lowest level. I'm a full-tech diver and that takes years. But with open water youll be certified to dive yo to 70 feet.