You don't have to switch your gas, you could leave it on the price cap.
I thought EDF had large exit fees?
If replying to my comment - I think you may have got mixed up - I was saying with octopus ? you can switch to the tracker over the summer if you want (as it could be cheaper) , and then back to price cap in winter (so you’ll be protected by the price cap). And that octopus have no fees to change, switch or exit tariffs.
I beleive EDF exit fees could be close to £300, but I may be totally incorrect with that - so don’t take that as gospel - but there are definitely fees to switch or exit.
Also if you go onto an EDF EV tariff, you HAVE to take out a gas tariff too as they are dual fuel tariffs only, and the unit price for gas is huge at the moment with them - I think something like 13p/kWh.???
Octopus Go is an electric only tariff, so you have multiple options for gas - either go onto standard variable with them, fix with them (or anyone else), go onto octopus tracker for gas, or even stay with your current gas supplier like I have, I was lucky enough to have a good fix with British Gas for gas - 3p/kWh until next November - we were on a fixed gas (3p/kWh) and electric(22p/kWh), but it worked out cheaper for me to switch my electric to octopus go AND pay the early exit fees of £40 to British Gas - I’ve already made that early exit fee back in savings on Octopus Go!