Hi thanks for your approach to us. In this crisis It is quite natural most of the people feel a kind of insecure about their relationship.
Like you many of them working from home, in which working hrs has increased, couldn't give much time to their loved ones. Rather than thinking negative, In spite of less time try to communicate something valuable or important. Which could make both of them happy and confident.
It is understandable that working style has changed and your partner could accept it.
If you show negative approach may be she also might feel the same. You can try to think positive times which has built up a trust in both of you..
Next Steps
If you can't handle the emotions, then you can take the help of a psychologist.
Health Tips
Try to share conversant that makes you both happy, focus on your work if your performance deteriorate it adds to your stress, try to plan / organise your routine, set a goal, do relaxation or exercise/ hobbies which calms. Take care, stay positive.