6 Weeks without solid foods is not fun, I feel for you on that one.....
I've done 3 1/2 months on liquid diet when my orthodontist decided my mouth was too narrow to fit my teeth in, so he split my pallet........ That sucked.
And about 2 weeks when I broke my jaw.
You're going to learn to love smoothies, you can pack almost anything into a smoothie, even chocolate cake, so now will be as good a time as any to buy yourself a decent blender and a truckload of milk and start experimenting, you'll have fun, I did......
All the best for your operation, regards, Ben.