If your interest in moving to your parent's home country is not brand new and therefore it's more than something you're just beginning to consider, jump on a plane "tomorrow" and start reading Russian lit and spending hours on Reddit there. This assumes you haven't spent a ton of time there in the past because if you haven't then you will find immediate meaning living there. And if you decide to do one of those other things, or you just feel like it wasn't the right move, you can immediately fly back! No risk. Don't wait. Please. Just book a ticket now.