I'm
growing better boys this year too. mine are about baseball size, which I thought they should be getting bigger than that? did you sink your tomatoes into the soil...bury some or most of the plant underground? my tomatoes usually seem to produce a whole lot at one time, then kinda 'rest' for a few weeks before they start producing more. I don't know about fertilizer, I just use compost and occasionally some m.g. where did you get your plants? it makes me wonder a bit if they were sprayed with something...you only had them a month, planted them, and got very small tomatoes pretty quickly. some growers will spray with chemicals to keep plants short and stalky and fruit really before their time in order to sell a 'nice pretty plant'. we have lots of tomato growers around here. someone else will be along shortly with more advice.