Be sure to turn off cabin overheat, Sentry, pull USB stick and unplug things from accessory and USB jack .
Keep car out of the sun.
Also no third party apps like Tezlab or TeslaFi to ping your baby.
Yeah you can use the Tesla app when you want to check on it.
I used to travel a lot and before Sentry was introduced, in my garage in Florida, I averaged .5% per night when I was gone 5 days to two weeks at a time.
But that .5% was for LR RWD.
I see no reason why you shouldn't be OK with avoiding any un-necessary power drain.
Even 1% per day will be plenty of margin.
Back in December I went on a two week vacation and had the car in the garage plugged in, so I didn't make any preparations at all and it was charged to about 75%. About 3 hours after I left the house the circuit popped so it wasn't charging the whole time I was away and to my surprise when I got back it was at 50%. However that was before Sentry mode, and I have noticed that pulls a fair amount of power.
Just like @NR4P said, turn off Cabin Overheat Protection, turn off Sentry mode, and deactivate all your apps. I took a 2 week cruise this spring and left my M3 sitting outside in the sun at the airport for 18 days, my loss was almost exactly 1% a day. So charge the car before you leave and you will be fine. I was a little more nervous because, due to delays in leaving the house, I did not have time to stop en-route and charge. However, I shouldn't have worried, we came back to plenty of power to make it to the supercharger and fill up before driving the rest of the way home.
I was out of the country for 8 days last month. Kept the car parked in my garage and plugged in. I lost less than 0.5% of range a day. Over the 8 days total it charged once a day to maintain 50%, adding 2.5kWh the entire trip. Was pleasantly surprised since I expected twice the loss.
Dual Motor LR non performance. Still on software version 2019.12.1.2 due to lack of easy access to WiFi.