If we talk about cash, then I consider it optimal to play 3-4 zoom tables, two sessions of two hours a day. This is about 3-4 thousand hands
per day or 60-80 thousand hands per month. It is very important, in my opinion, to limit yourself to a time frame in order to avoid excuse marathons (like "I'm going to thrash today until I hit minus !!!! 11").
You can start with one table and gradually increase the number of tables. Set your stop loss to 2.5 BI to get started. If you get on 1 zoom table in the first 15 hands of 3B, then go out and don't play that day.