Welcome! No need to lie. If anyone inquires just say you're taking some "me time" for theocratic/spiritual reflection, ALONE; like Christ did (on several occasions).
Use the 'we need to take time and actually meditate on what we learn' mantra.
WTBTS bombards everyone with gobs of material every meeting, every week, to the point no one has time to actually think about any of it. It's done purposefully to take up so much of an adherents time that they have no opportunity to actually understand or *gasp* think about what's being taught.