Good day to you Jeremiah,
the answer to your question is YES. You can rent out your HDB flat and stay in a condo if the MOP has been met.
HDB Owners may sublet their flat if they have met the minimum occupation period:
1. For non-subsidised flats (flats purchased from the open market without a CPF housing grant), flat owners must have occupied their flat for at least 3 years;
2. For subsidised flats (flats purchased directly from the HDB or from the open market with a CPF housing grant), flat owners must have occupied their flat for at least 5 years.
Flat owners who meet the eligibility requirements above and who concurrently own a private property, are allowed to stay in the private property and sublet the HDB flat.
I hope this helps! If I am able to assist you in renting out your flat, do let me know. Thank you!
Best Regards & Happy New Year