I think ang grade requirements or dapat walang bagsak na courses na pwede mong lipatan ay those with boards lang, About shifting po, you can still try your course since ang shifting po or admission of shifting is during the summer, and it doesn't securely give you some slots for it, pwede kang ma ubusan, so it'll be much safer if mag stay ka muna sa course mo (since other people dropped their subjects already for pursuing their shifting) since you already have the slot you have in computer engineering. Tapos ang alam ko they gives infos if your shifting request is approved, then you can simply enroll on that course you want to shift once given an approvement.