Hi and Welcome!
Please give us your surgery date and we’ll make a signature for you.
Stiffness/Tightness is a normal occurrence after this kind of major surgery. Your surgeon did major carpentry work and disturbed every millimeter of soft tissue in this area. You aren't tight because your muscle is underused and needs to be stretched and rehabbed. You're tight because your tissue is healing...and full healing takes a full year or more, even for a partial.
If you can take Tylenol, and your doctor approves, then the most effective way to take it is 2 x 500 mg tablets every 6 hours, to a total of 4,000 mg (4 doses) in 24 hours. You need to take it regularly, to keep up the levels in your bloodstream. If you just take the odd dose now and then, it's far less effective.
Check all other medications you're taking, to make sure there is no Tylenol/Acetaminophen/Paracetamol in them. If there is, scale back one or two of your regular Tylenol doses, so you stay within that safe 24 hour limit of 4,000 mg.