When you ask it's the right time to buy Ethereum, but for now it would be better to hold the Ethereum you already have. There will be time to buy Ethereum again in the next few months because right now Ethereum is doing well and trying to go higher.
Ethereum price now has a lot of good news and recent Defi projects are giving the coin a big improvement in price. In addition, the psychology of investors is very optimistic when investing in this market, so there will certainly be nothing to worry when you buy Ethereum. This is the time that you should accumulate and should set the price to sell to ensure profit.