SysDE Offer! Seeking Guidance on Internal Transition to SDE

I have recently received offer for system development engineer 1 from Amazon which is infact a downgraded offer from sde 2. I wanted to know more about internal transition to SDE. The timeline and other factors to consider before accepting the offer. I already have other competing offer (Support role) so bit confused to accept the offer or try again after cool down

Location: Hyd, India Yoe: 3