First time posting in this subreddit. Really like the material and learnability of this aspect of our lives. But I've come with a question for furthering my seduction/social/personal life. How would I handle 2 women at a time?

My example: I'm seeing 2 girls I've met online, one of whom I've already had sex with. Both of them want to see me, but don't think I can make it last any longer, I don't have enough time for 2 girls the way I'm doing it. Is there any pointers that can make it a little easier to see both continuously without them finding out?

Basically, are there any rules/tips for juggling/dating multiple women?