While I agree with Sara Anne that the three weeks difference is unimportant, I thought you might like to see the reasoning behind the timing of treatment in the Dr. Lamm Schedule. Dr. mike O'Donnell is one of my trusted authors on BCG and bladder cancer.
The FAQs, including timing discussion, starts on about page 13 of the following.
What's with this Bleeding ? 6/2015
DX: HG Papillary & CIS
3 Years and 30 BCG/BCG+Inf
Tis CIS comes back.
BC clear as of 5/17 !
RCC found in my one & only kidney 10/17
Begin Chemo; Cisplatin and Gemzar
8/18 begin Chemo# 3
Begin year 4 with cis
2/19 Chemo #4
9/19 NED again
1/2020 CIS is back...
I believe based upon comments on this Forum that between the series of 3 BCG treatments it is 12 weeks from the 1st of the prior BCG treatments to the 1st of the next series of 3.
My doctor believes it is 12 weeks from the last treatment of the prior to the 1st of the next.
The doctor's position would make it 3 weeks longer between the starts of treatments than my position. Does it make a difference? If it does, can anyone give me respected medical references in support of 1st to 1st.