That’s a good way of conveying what you’ve done! It seems that you can generate 2 more blocks in rooms 4 and 6 each.
Room 4:
Gur gnyy iregvpny jnyy pna or gra oybpxf gnyy jvgubhg oybpxvat lbhe jnl vagb gur svsgu ebbz.
Room 6:
Gur “qbbe” gung abeznyyl yrgf lbh cnff guebhtu n jnyy unf n frpbaq hfr gung vf arrqrq sbe guvf ebbz.
Va ebg 12:
Xifo b xbmm jt b epps, ju fggfdujwfmz bdut bt bjs, nfbojoh uibu xbmmt dbo cf hfofsbufe uispvhi ju! J usjfe up dpowfz uijt qfsibqt opo-pcwjpvt rvjsl uispvhi uif tibqf pg uif sppn, cvu jg zpv dbo uijol pg boz xbz(t) up ufmfhsbqi uijt npsf dmfbsmz, J’e mpwf up ifbs ju.