Solo BDSM lifestyle question:

I engage in submissive fantasies at home. I am experimenting with changing my diet to consist (mostly) of bland, boring foods to reinforce status as a slave, where pleasure from food is completely removed. Things like plain oatmeal in water, unseasoned chicken and vegetables, homemade gruels. I am aware of my nutritional macro needs, and will also be taking multivitamins.

Has anybody had experience with this? Is this too extreme to maintain long term?