You can also skip time by the fire (bench) to make it faster
I know but it took me from waking up in the jungle to that point almost 4 hours and I had to grind at least 150+ Schell's for the quests. My grindpath was help Tara, help Mary and go fishing after that was night and I repeated that way untill I had enough. I also sold the emerald I found in the ruins.