How long?

Me and my husband will be starting our ivf process in hopefully the next couple months. We already have our plan set just needed a little time befor we actually start the process. Our dr has already let us know it will be a frozen transfer. So I am curious if anyone has had a frozen transfer how long the process took? My dr said the whole thing will take a month or so? But I also read on Google a frozen transfer takes about 3 weeks? I’m new to all this so was just curious if you have done frozen transfer how long the process was thanks!