Feeling Extreme weakness post Covid.

My husband is having extreme weakness and dizziness. He is facing extreme bodyache and severe headache. We already started rich diet including soaked almonds ,walnuts, raisins, dates,black chana, paneer, fruits, soya chunks veggie, green veggies, all kind of pulses, Electrol , Glucose, coconut water, Protein shake, Turmeric milk mandatory at night along with Zinc tablets and Vitamin C tablets. All this are continued with his epilepsy medicines: VALPARIN CHRONO 500Mg and FRISIUM 10Mg. His CRP is still 17.98 . History: My husband has developed symptoms on 22nd April and got tested covid positive on 25th April, his CT score was 12/25 and CRP was 65. He had very bad cough and blood stains in mucus while coughing. We gave him proper medicines and his RTPCR came negative on 9th May. He has the existing disease, absense seizure, kind of epilepsy for which he daily takes above mentioned medicines. But he is very restless and tried whole day.Please suggest do we need to take any other medicine