Allah SW says in the Qur’an what means, “O you who believe! Fasting is prescribed for you as it has been prescribed for those [who have believed] before you, so that you may be [ever] God-fearing. It is for a specified number of days. But one among you who is sick or is on a journey [shall then fast] the same number of other days.  Yet for those who are [hardly] able to endure it, [and do not fast,] the redemption [for each day] is feeding an indigent person [instead].” [2:183-184]

As you are not able to do either of them, then both options are beyond your capacity and you are not required to do anything, for “God does not task a soul beyond its capacity.” [2:286]

Allah Almighty knows best.