Though it’s hard, especially if your mom agreed to let you have a turkey, for her not being willing to get you turkey feed, or at least pay partly. :hmm
Any jobs you could do around the house to earn some money? Mealworms/and/or turkey feed shouldn’t be overly pricey.
Just out of curiosity, who gave you the turkey?
I know nothing about turkeys, but I do know for chicks you want to raise the heat lamp a bit each week. If it’s still pretty warm, the feathers will take a long time to grow.