In many Jain traditions, yes — if you interrupt Samayik for more than 2 ghadi, it is generally considered necessary to restart the Samayik from the beginning if you wish to continue it properly.

Simple meaning:

• 2 ghadi is taken as a traditional time limit.
• If the Samayik is broken beyond that limit, the original observance is usually treated as interrupted.
• So, to maintain the sanctity and proper vrata-fulness of Samayik, one should begin again.

Important note:

• Exact practice can vary slightly by Digambar and Shwetambar traditions, and also by local maryada.
• The safest conduct is to follow the guidance of your Guru or local Jain Sangh.

If you want, I can also explain the meaning of 2 ghadi in minutes and the proper rule for restarting Samayik in simple terms.