No. Use what you have in the short term.
You can blend together classroom and e-learning in the medium term, and move exclusively to an e-learning approach in the long term.
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Classroom learning does not conflict with e-learning. They are really complementary approaches. One is not a bad approach with the other being a good approach.
If you have a lot of classroom courses, keep them. You don’t need to revamp all your courses. Keep delivering classroom courses as long as they make business sense for you.
In other words, use up what you have. When your inventory is depleted, you can move to the new e-learning format.