Should the Tasbih be repeated for Dhuhr and Asr prayers when they are combined after their original time?

Prayer is a great pillar of Islam, and it must be performed on time in congregation. If that is not possible, then it should be prayed on time, even if individually. If it is not possible to perform the two prayers on time due to studying, with an urgent need for that study, and the person cannot find another place to study, then it is permissible to combine Dhuhr and Asr prayers by performing them earlier (taqdim) before the lesson begins, if the time for Dhuhr has entered, to alleviate hardship. And if teaching begins before the Dhuhr prayer time and cannot be interrupted, then it is permissible to combine the two prayers after the teaching ends. As for the regular supererogatory prayers (Nawafil Ratibah), one should be keen on performing them as long as there is ample time.