I am always amazed at cue makers that quote a 2-3 month build. I have never had a cue come in under 6 months...which is fine with me, as the wood needs to properly season between turns to help prevent movement (warpage). I always expect the build time quote to be no less than 6 months...and generally closer to 9 months.
There are a few well regarded makers that as a rule, do not provide in-progress pics...they're simply too busy (there are others waiting for their cues as well)...but will provide pics of the finished or nearly finished cue at the end of the build. I don't have an issue with this, as most of the makers I have worked with have delivered within a month of the quoted completion date, and delivered exactly what was expected. Because I have full trust in these makers, I have learned to just leave them be, they'll let me know when we're done or close.
There has been enough said about certain makers here on AZB, that you can typically find out which makers may be a crap-shoot, and which ones are very reliable. Doing one's research before placing your order is the difference between a pleasurable experience and a nightmare.
Lastly....NEVER pay for a cue in full at the time of the order...it leaves little incentive for the maker to complete in a timely manner, as he already has your money. Be very leery of makers who require the full amount due prior to the build.