Advise - First trip to Europe

Hey, I have flights booked for my first Europe trip in June - I’m going with my partner and we are hoping to spend 2/3 months travelling before coming back to Australia. I’m really just looking for advise about going considering what’s happening in the world right now, it’s stressing us out a bit as well as knowing inflation is rising there too and how much more everything is going to cost. We know Europe is already an expensive trip, and are hoping to do it as budget friendly as possible while still seeing iconic places and having memorable experiences. I’m just hoping someone can give some advise on how much (roughly) you may think its going to cost us and if you would still go during these times. We don’t have a full itinerary but roughly outlined - we will fly into London, head to France (short duration as I know they are expensive places) and keep heading to Southern & Eastern countries. Planning to skip Norway, Denmark, Netherlands, Switzerland due to high costs. (we were hoping to keep it around AUD $20,000 - $25,000 each.) I know no one can give definite answers on anything, but any advice/suggestions/opinions would be appreciated, thank you 🙏