Booster or third dose, please read.
Just to clarify:- you should have the third primary dose if you have CLL at any stage.
The third primary dose should be at least 8 weeks after your second dose as it assumes that you did not generate a good response to the first. You may then have a 4th dose early next year and that will be your booster.
The normal booster program requires 6 months and assumes you had a good response to the first two (ie healthy adult) and just require a booster due to antibody levels decreasing over time