First week of Dec is the highest
DVC demand week of the year at WDW, second week is third highest (behind Christmas week which is second). For those first two weeks of Dec, BWV resort (previously standard) view and boardwalk view 2BRs, and GVs, usually fill within nanoseconds after 8 a.m. eastern at 11 months out; and it is a time when even the pool/garden view 2BRs have a risk of filling very quickly at 8 a.m. eastern, although those sometimes last a little longer. VGF 2BRs and GVs often do the same although sometimes you can get lucky.
Also be aware that the resort view BWV 2BRs do the same year round and thus even finding a day of the year you can begin a walk can be difficult. Boardwalk view 2BRs do the same throughout the "fall " season (late Sep to marathon weekend in Jan) and once in a while other times of year, but you can possibly begin a walk for them In July (after July 6), because July (after July 6) is the second lowest DVC demand time of the year (Feb 1 to the Thurs before Presidents' Day is lowest), and possibly begin in Aug. BWV GV's have the issë at other, but not all, times in the Fall season, and you can usually begin a walk in July or Aug .
VGF 2BRs and GVs have the issue a number times during the Fall season, but you can usually begin a walk in July or August.
Note, you do not mention whether you own those resorts. If you are looking at the 7-month window, then you should assume walking will likely not work and you just need to get lucky via someone turning over the rooms at 7-months out.