We would suggest you transplant into a larger pot and nip the shoots/flowers to keep it in the vegetative state. If your soil is wet and heavy due to a high clay content, add sandy soil and organic matter like compost, leaves or manure. Tomatoes are heavy feeders. Refrain from adding peat moss as it no longer a sustainable product and provides no nutrients. Transplant when soil temperatures warm, usually mid to late June.
Thank you for your question J. Beaupre.