The problem here OP from what information you've given is that as you've had three preterm labours previously, you're at risk of not going full term with this one and no obstetrician is going to book a planned c section pre-term. The majority of planned sections are 38, 39 and 40 weeks. Anything before that would usually be urgent/an emergency.
One of the other issues is that you've had a previously very quick labour, which could mean that even if your plan would be to have a section when in labour, you may not get to theatre in time to have a c section.
Realistically you need to go back to the consultant and ask questions. Ask lots of what ifs, ask what their concerns are with planning a c section.
You were induced previously for health reasons, are these still risks for you/baby? Will you require induction this time because of your history? And if you do, would the obstetrician agree for an early planned section? If you don't require induction and get to term could you have a planned section? If you get to term and labour could you have a section?
Write a list of possible eventualities and ask the consultant to explain their justification for not offering a section and what is their balance of the risk to your ongoing health issues and the risk to baby. You both matter equally in this equation.
First step is to request another appointment with consultant or a second opinion with someone else. May also be helpful to get another consultant from another specialty (orthopaedic/neuro etc if you have one) to speak directly with the obstetrician so they're working together on a plan which takes account for your needs and those of the baby.