Gyno can't be reversed. Sorry, its a fact of life. Nolvadex can prevent gyno in the beginning but it can't reverse it. Nolvadex only prevents the binding of the estrogen to the receptor sites but will not lower your E2 level. Adex is for that.
As I said above the 44 E2 level depends on the range the lab uses. Most often E2 levels that cause gyno are much higher and over long periods of time.
However, if you are indeed developing gyno from a 44 level (with a lab range of 15-50) then you do need to do something about it.
The arimidex alone should be enough without the nolvadex.
Starting dose is hard to say as KSman doesn't give a hard number himself. Try the dose I gave above, wait 3-4 weeks and get labs done and then refine your dose.
It would be much easier to give you a starting dose if you were on TRT but you're not so just start somewhere.