Presumably you mean January (as there's only one day left later this month)? I would avoid January 1-6, avoid weekends and holidays (January 14), and try to get there by 2 or 3pm. Or as early as possible. Buy tickets in advance.

BTW in case than names are confusing, "TeamLab Borderless" is the name of the show ("TeamLab" is the company that puts on the Borderless and Planet shows). It's held at a venue called "Mori Building Digital Art Museum," which is located in the Aomi district of the Odaba area. The venue is owned by owned/managed by "Mori Building," the real estate company that also owns the Mori Building in Roppongi Hills.