Trip Planning: Ujjain, Indore & Omkareshwar – Need Suggestions

Hi everyone! I’m planning a trip to Ujjain, Indore, and Omkareshwar, and I’d appreciate some help. Here’s my plan: Arrival: Day 1 at 7 AM in Ujjain Return: Day 3 from Indore at 4 PM can you help me in regard what would the cost of hotels and where should I stay? I don't have car, so I need to travel in taxies or looking for your suggestions here. Also is there any specific rules or dress code for any Mandir? I'll visit in the last week of Feb after Shivratri, it is usually crowded in this time period? Any recommendations places to visit ? Best food?