BSc Interior Design is a good course for you if you Love to design! Or is there something else that you would like to consider?
Yes, you could work from home office at your own pace, and/ or online too. Secondly, there are freelancing jobs also in this field.
But It is always advisable to work and gain experience in the field before starting on your own.
Then, You could also be a teacher in this subject at any Institute.
Dear, be sure of yourself, where there is a will, there is a way! So do study hard acquire knowledge and you shall find channels wherever you would be!
I am right here for you and you can have a chat with me in detail with reference to any queries/doubts.