Sixty days in county is manageable and the preparation you do now makes a real difference in how smoothly it goes.
Start with the phone situation. Many Illinois county jails use phone carriers that charge over $13 per call, which adds up fast over two months. Before you go in, find out which carrier your specific jail uses and set up a prepaid account with them using the numbers of the people you call most. That way funds are ready and your approved contacts are in place from day one. If someone on the outside sets up an InmateAid discount number before you report, the savings on calls can be significant depending on which facility you are going to.
Write down every phone number you need before you surrender. You will not have access to your cell phone inside and most people discover too late that they have no phone numbers memorized. Put that list somewhere your property can be stored or give it to someone who can send it to you in a letter.
Arrange for someone on the outside to put money on your commissary account shortly after you are booked and processed. Having funds available within the first week means you can supplement the facility food, buy hygiene products beyond what they issue, and cover phone costs without waiting on someone else's timing.
Have someone ready to send you books or magazines through InmateAid once you are settled. Reading is the single most effective way to make 60 days pass faster and keep your mind sharp.
On the behavioral side, the advice is simple and worth taking seriously regardless of how short the stay is. Mind your own business, keep your personal life private, be polite to everyone, and do not draw attention to yourself. Sixty days with a clean record is nothing. Sixty days with drama is a lot longer.
You will be fine. Go in prepared and come out clean.