Yes. You are still very close to your surgery and your vision would be expected to continue to improve as everything, not just your cornea, continues to improve.
The difference in your vision at various distances is due to the different refractive error you now have since your surgery. Nothing to worry about.
You have a complicated ocular history and I do not think it is unusual for your surgeon to check you over 4x in a month. It just means you have a concerned doctor :o)
I do not think a second opinion is needed as it seems you are in good hands, however if you wanted one, I would see a corneal specialist.
yes. Having your focus seem weak at times is nothing to worry about at this point.
No. No danger to your cornea to putting off surgery as long as possible and using the contact lens
....matter of fact that is what I would recommend.
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I am glad to hear you are doing so well. Let me know if I can answer any more questions for you. Have a good weekend