In Jain Dharma, there is no fixed number for “how often.” Guidance is about purity and restraint (brahmacharya), not counting frequency.

• For monks and nuns: complete celibacy always.
• For householders: limited, ethical conduct—only with one’s lawful spouse, with self‑control and responsibility, primarily for family life, not indulgence.

Simple Jain guidelines for a householder

• Practice restraint: reduce frequency over time to support spiritual progress.
• Observe brahmacharya on vrata days (e.g., on upavās/poshad, during Paryushan, and other key observances).
• Avoid any form of violence or harm (mental or physical), deceit, or coercion—conduct must be calm, consensual, and non‑harmful.
• Guard the senses: avoid stimulants, pornography, and habits that inflame passions.
• Keep fidelity; avoid thoughts and acts outside marriage.
• As you advance in the 11 pratimās, you move toward greater celibacy; many laypeople adopt periodic or long‑term celibacy vows.

Key idea: Jainism does not prescribe a schedule; it asks you to live dharmically—limit and refine sexual activity, aim to lessen it, and observe full celibacy on sacred days, with the ideal of complete celibacy as the highest vow.

If you wish to study the layperson’s vows (including brahmacharya anuvrat, guṇa‑vrats, and śikṣā‑vrats) and the pratimās, see this overview: