Block of Build or Continue with Base

Newbie question here but I am wondering if you anyone could point me in the right direction.

I had an injury just after COVID started but got back into riding consistently since late July. I have been riding 3-4 days a week since and I am wondering if I should do the following…

Build - Oct-Dec
SSB - Jan-March
Build - April-May
Specialty - June-July (A Race)

or

SSB Oct-March
Build - April-May
Specialty - June-July (A Race)

Thanks.
Geo

Have you done plan builder? My A race is June and it had me do the following;
ssb1
build (what I am currently doing)
ssb2
Build
Base
specialty.