Keeping Spark While Long Distance (27M and 24F)

I have been in a long distance relationship with a girl for about a month. When we first met in person we really connected and sparked. Since going long distance we feel the spark has been dying and like we are just talking with a friend. We text regularly throughout the week and video chat once a week. Any advice or tips to make the online interactions more engaging and fulfilling like how it is in person?