Absolutely! I think I am especially slow at cutting veg, which is a compromise between my motorically undeveloped and untrained self not cutting my fingers (happens every few weeks) and speed. Multiplying by 1.5 is a safe lower limit for me.
I did learn a few things through it though (how to use vinager and not to be afraid of more than 5 ingredients), which is a great outcome. Apart from a bigger selection of recipes I know.
I would highly recommend learning how to use a chef’s knife properly. There are techniques for cutting, cleaning etc that reduce the cooking time significantly. I had the luck to be taught how to use one in school and by my dad but I always notice most people don’t know how to use it and don’t take the time to learn it (which would save them a lot of time)
I did learn a few things through it though (how to use vinager and not to be afraid of more than 5 ingredients), which is a great outcome. Apart from a bigger selection of recipes I know.