Thanks for posing on the forums! That’s the most common practice. It can be a bit risky if you are not ready to go right into ~9 hours of training.
If you have the Level 1 plan, I’d recommend you switch to the Level 0 plan for 4-6 weeks, and then go back to the Level 1 plan (you can do that for free with our Level Guarantee at https://www.8020endurance.com/contact/).
If you are already on the Level 0, you’re probably OK, as Week 4 of that plan is light for just about any athelte.