Beth - Recovery from the removal of a benign tumor depends on the tumors position, the density of your jaw bone and the position of the nerve relative to vital structures. The key factor in healing depends on the stability and strength of you jaw after the removal of the tumor. The jaw can have such a large amount of missing bone after the tumor removal and it can be fragile. If so, you may be restricted to soft food for a while of healing. With the large void in the bone after the tumor removal, it can take almost six months before the jaw regains its full strength.
Having removed large tumors that created a severely weakened jaw, I wired the patient's jaw so they could not open or close their mouth for about 6 weeks to allow the jaw to regain enough strength to regain some normal function.
So every case is different. You need to sit with the doctor, in advance, who will be treating you to go over any restrictions and what treatments might be needed during healing. I suggest you ask the doctor what the potential complications are. Ask what specifically you will be able to eat.
I wish you well and hope everything turns out well. If you have any additional questions, feel free to contact me again.