Yes. In Jain Dharma, a layperson who cannot take diksha can still adopt some muni-like disciplines in a suitable, limited form for spiritual progress.

Key point:

• A grihastha should not imitate the full conduct of a monk.
• But one may practice a partial form of restraint according to one’s capacity.

Examples of such support practices:

• Anuvratas: small vows of non-violence, truth, non-stealing, limited possession, and restraint in conduct.
• Regular pratikraman and आत्म-निरीक्षण.
• Upvas / ayambil / ekasana according to strength.
• Limited possession and reduced attachment.
• Controlled speech, anger, pride, deceit, and greed.
• Brahmacharya according to lay discipline.
• Simple living, service, and devotion to Tirthankars, sadhus, and the sangh.

However:

• A layperson should keep the framework of household duty in mind.
• Monastic rules like complete aparigraha, silence, wandering, alms-only living, and full renunciation are meant for monks and nuns, not for householders.

So the Jain way is: take inspiration from monastic discipline, but follow it in a graded and practical form suitable for a lay life. This is spiritually beneficial and fully in harmony with Jain Dharma.