Personally, I am very involved in CA, OR and WA legal cannabis and have been for a decade. I have more experience at a consumer-facing/product producing/processing level than most. Having a 300 mg tolerance isn’t the norm and not something OP should benchmark.

To be clear, of course you can melt a gummy into a glob and eat it all to get blasted off. In my opinion, getting high AF 6-8 hours and feeing groggy for 20-24 hours and going to work still high the next day is not the best way to utilize thc for overall effective use. And if you’re paying $15-$35 for a 10 pack of gummies and eating them all at once, you’re also blasting through coin quickly and only get one high that leaves you groggy and overwhelms your CB1 receptor, which isn’t what you’d want to do from a recreational standpoint.

Have fun, do what you want, but don’t let your tolerance get way too high. Also, look for gummies that have an emulsifier, like Sunflower Lecethin so the thc goes into your bloodstream rather than your gastrointestinal tract. You get elevated in 20-30 mins instead of 1-2 hours. CBG is also a REAL nice cannabinoid as well. Especially if you have a higher tolerance.

Suppositories also exist.