No need to worry, my Luigi has no visible scrotum and he was neutered at 8 months, so not early at all, and he didn't lift his leg until a few months ago. Prior to getting neutered he started to mark, but by squatting

I thought he was deliberately peeing in the house, but it all stopped once he was neutered as I now realized he has preferred scents to mark on.
I noticed at the beginning of winter he would lift his leg to mark the snowblower cover as we had mice hidding under there, that has since become his place for his morning pee and he lifts his leg now, not very high, but it is a lift none the less. His afternoon/evening pee is in his designated area and he squats.
I had him to the vet today for his annuals and as we were in the room waiting for the vet to come in Luigi was having a good sniff around and around and around and I noticed he was walking oddly, looking closer I noticed he was marking, by lifting his back left paw ever so slightly and leaving a trail of pee. Silly boy!