Another conversion chart says that 60
mg of Armour is equivalent of 75 mcg of T4. For the latter, that would have been 120
mg of Armour instead of 90. So, just be aware that you most likely will need an increase, for that reason as well continuing to have symptoms.
Another couple of things to consider is that any med with T3 in it is best taken by splitting the dose in half and taking 1/2 in the morning and half in the afternoon.