VOT (Occupation Transfer) isn't what you'd be looking for, you are looking for a VOR or Occupation Reassignment (Transfer is for folks who've served in a trade before, qualified and have usually 48 months of service.
I am not sure if the Basic Training Admin Guide is still in play or if it has changed much since the last version I have (I am not at work right now so can't verify if it's still in use). However...from the BTAG:
Occupation Reassignment
214. Overview Occupation reassignment is roughly equivalent to occupation transfer (OT), except that it applies to personnel on the SUTL or BTL who are not yet occupation qualified in their current occupation. This includes personnel who were previously qualified in another occupation (eg OTs, CFRs, component transfers, etc). While the basic process is very similar to that for OT, there are some specific policies affecting reassignment which are quite different. Reassignment, like OT, is an integral part of CF retention initiatives and seeks to balance the career choices and aspirations of individual CF personnel with the legitimate needs of the service.
216. Eligibility – Voluntary Reassignment
Personnel on the BTL/SUTL may request voluntary reassignment as indicated below:
a. BTL NCMs – after BMQ. May apply at any time after completion of BMQ and before completion of occupation training. May only request from voluntary list and may be limited out of under-strength occupations;
e. The trainee shall submit a written request through his chain of command clearly indicating the new MOSID(s) to which he/she is requesting VOR or, if the trainee has no new MOSID in mind and wishes to investigate what other MOSIDs for which he/she may be qualified. In the written request the trainee will clearly indicate what his/her career intentions (release or remain in current MOSID) should the trainee be deemed not suitable for VOR or the trainees decide that the MOSIDs offered are not personally acceptable. Personnel requesting a VOR will not normally be permitted to cease training. However, the Basic Training Manager, in consultation with the Training Establishment, may decide that the trainee will be removed from training if capacity issues and/or administrative or disciplinary problems prove that the trainee is a disruptive influence or otherwise unacceptable presence on the a course.
If this policy isn't in place anymore, there should be one similar to replace it. Best place for that info (IMO) is the Base Personnel Selection Office. They usually have a page on the Base IntraNet site and usually have links to the various programs and policies. If you go onto the DWAN as well and look in the CFAOs, find CFAO 11-12 and see what it says about MOC Reassignment. AFAIK, the CFAO has still not been superseded by a DAOD so is still applic policy.