Here is a thread on that subject:
The main point is probably cut down for 3 hours to 2 hours max. I would most likely recommend a Zwift group ride. I’ve been doing quite a bit of those this year for some solid zone 2 riding. It’s a bit more controlled and most likely you are not looking to get in so much anaerobic work at the moment. If it is a bit more zone 2/3 that is ok. Avoid going close to or over your FTP.