No, you will not be able to get by on homeopathy treatment only. You will need the
hormone replacement med for the rest of your life. You can't live without thyroid hormone and when your thyroid no longer makes any, you have to replace it with the med.
Although your levels are in the normal ranges, it's possible that they are too high for you and you may need to back down on the med, just a bit - to like 66 mcg or even alternate 66 with 75, which would average 70.