I think you best contact your diabetes team about that. Most of us dose our insulin depending on the amount of carbs we eat. Are you in the UK? If so, you might want to look into a DAFNE course where they teach people about adjusting their insulin to the food they choose.
For instance, I would need a lot more insulin for an apple and a couple of crackers than for a full plate of cauliflower cheese, a steak with garlic butter and a salad.
In fact, injecting any insulin for the cauliflower cheese meal would send me straight into a hypo! Which is exactly why no-one on this forum is going to advise you on the amount of insulin you take.
Good luck, and please ask help from your HCP's with figuring out the right doses for you!