Welcome to the mad world of Tesla
. In your shoes I'd hold off. Tesla pull and push the demand lever like it's going out of fashion. Most likely they've already a bunch of non LR AWD produced and possibly on their way - they want to get rid of them pronto. As soon as that's done they'll bring it back, maybe in a slightly different guise but it'll be back.
They did something similar with the S75D in January. Pulled it leaving only the 100D which put £20k overnight on my replacement. It came back a month later as the "Standard Range" S.
You do say the 3 is "manageable" but would prefer the Y - for me the boot is a killer on the 3, so maybe rethinking and picking up an S instead wouldn't be a bad idea. Then check out the Y is 2-3 years time. I suspect there would be some very good deals on inventory stock S's between now and the end of the month..
Hope that helps, or maybe just confuses you even more