I think both online and offline are fine but would be cautious if my T advised I focus on offline relationships. I think a potential problem could be that one could be "satified enough" with online interactions to such an extent that you don't reach out to folks IRL.

Also what about connecting with folks in ways that may not require a lot of trust like a bookclub at a bookstore, exercise group activity/team, class on something that interest you. That way you could have the relationships/connections be about the event or thing instead of something heavier. JMO