The phrase "and gradually reducing" is correct and usable in written English.
It can be used when describing a process of decreasing something over time, often in contexts related to quantity, intensity, or frequency.
Example: "The company is focusing on improving efficiency and gradually reducing waste in its production process."
Alternatives: "and slowly decreasing" or "and progressively lowering".
Senate Republicans would offset most of the cost by freezing the pay of federal employees through 2015 and gradually reducing the federal work force by 10 percent.
The model accounts for porous media clogging due to: (1) fine particles depositing on the pore walls and gradually reducing the pore radii and (2) pores trapping particles larger than the pore openings.
In Brazil and Mexico governments have implemented sound macroeconomic policies, dousing inflation and gradually reducing interest rates.
In Egypt, the only available decoppering agent is D-PCA, so we tried hard to limit its side effects by starting therapy with a very small dose that was very gradually increased to reach the maximum desired dose meanwhile giving zinc sulphate starting with a maximal dose and gradually reducing it as D-PCA was increased.
The best performance could be obtained by initially setting ω to some relatively high value (e.g., 0.9), which corresponds to a system where particles perform extensive exploration, and gradually reducing ω to a much lower value (e.g., 0.4), where the system would be more dissipative and exploitative and would be better at homing into local optima.
Start high 'with nicotine' and gradually reducing it to get used to 'no nicotine'.
Suppose you plan to initially demand $9.5 million from the computer manufacturer and gradually reduce your demand to as little as $2 million.
In the tin plating layer, Pb was enriched at the surface and gradually reduced to zero along the depth.
She is very old-fashioned in a way.' She got rid of the three freezers full of goats' cheese and gradually reduced the size of the vegetable patch.
Girardi later became the Yankees' manager and gradually reduced Posada's time behind the plate -- just as Posada had reduced Girardi's as a player.
The government wants to begin to reduce France's accumulated debt, around 90 percent of G.D.P., and gradually reduce the government's share of G.D.P., currently more than 56 percent.
