PLA and PETG in one object?
I have doubts that this will work. Because, as @DerEd already noted, the two have completely different print parameters. I always use PETG as a support filament when I need something in PLA prints. It comes off the PLA perfectly, and leaves clean surfaces. And it is also cheaper than support filament.
Printing PLA with PETG for supports works pretty good. Printing PETG with PLA supports can be a bit trickier. The PETG does not stick to the PLA very well, and with a print that has minimal contact area with the build plate, like this print, parts being supported by PLA kept getting knocked loose. Failure after failure. Even running at really low speeds. Finally just gave up and printed with PETG throughout.
I know it’s possible to do this successfully, but it’s a little more challenging a problem to solve than it might seem to be at the outset.