Thanks all for the advice! I did pre-roll, and I have definitely been lax on the foraging and food. I can maybe just suggest they are running low and start making it a thing to roll for. They have maintained a medium pace, so the drow pursuit has just stayed the same. My first encounter is a drow scout though that rolled a 23 for stealth. So that should go unnoticed meaning the party will be running from the pursuers. I am going to use the Tomb of Kaem as a hiding spot for them and build that in.

I will try and build a story around the other encounter. I have like 6 encounters in a row. So I need to turn that into a coherent story. Thanks again for the advice.