I wouldn’t double the recipe since it’s already making a pretty big portion. Also, glutinous rice is a bit tricky to cook in an Instant Pot. With more ingredients, the pot will take a much longer time to heat up and add pressure, which potentially burn the bottom of the rice.

Hi Devo, I’m sorry to hear the recipe didn’t work for you.
I suspect that the wrong water ratio was caused by the type of glutionus rice we use. Just like long and short grain white rice, glutinous rice has different varieties too and requires different water ratio.
I used the short grain type, which uses less water usually. I’ve tested this recipe with more liquid before but the rice turned out quite soggy.
The recipe has been had mixed feedback and quite a few people reported the “burn error”. However, I have tried making it in three different generations of Instant Pot and had not been able to replicate the “burn error” issue.
Sticky rice is challenging to cook using the method of regular rice, because it requires soaking in advance then steam.
If you would still like to give this dish a try, I think the dutch oven method might work better: https://omnivorescookbook.com/sticky-rice-stuffing/ because the result is more consistent.

I think you can. I used the 6qt instantpot but the rice didn’t fill up to half of the pot after cooking.

I think you definitely can and that might solve the burning bottom issue. I would follow the recipe to saute all the ingredients. Then combine everything in the pot that you will place inside of the IP. Please let me know how it turns out if you decided to try this method. Happy cooking!